ADM - Traffic Control Devices Manual_Version 2.0 (November 2014).pdf

TRAFFIC CONTROL DEVICES MA

Traffic Control Devices Manual Version 2.0 - November 2014 Abu Dhabi City Municipality PO Box 263 Abu Dhabi, United Arab Emirates © Copyright 2014, Abu Dhabi City Municipality. All Rights Reserved. No part of this document may be reproduced, distributed, or transmitted in any form or by any means without the prior written permission of the Abu Dhabi City Municipality

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1.1.2.2

SIZE

The size of a traffic sign is important for two primary reasons: • •

Conspicuity: A sign must be of sufficient size to command the attention of drivers. Legibility: The legend (text or symbol) of the sign must be of sufficient size to allow reco comprehension by drivers travelling at roadway design speeds.

Legibility is the primary factor determining the size of text based signs such as guide signs. Hence, the signs varies depending on the amount of legend, lettering size, style and spacing.

Sizing guide signs on the basis of legibility ensures conspicuity. The parameters affecting guide sig discussed in Chapter 4.

Regulatory and warning signs are generally based on symbols rather than text and are generally smaller

guide signs. Consequently, conspicuity is as equally important as legibility in sizing such signs. These si to have standard sizes. Table 1-1 presents guidelines for selecting appropriate sign sizes for regulatory and warning signs. Table 1-1 1,2 Regulatory and Warning Sign Sizes Recommended Regulatory Recommended Warning 4,5 6 Sign Size (mm) Sign Size (mm)

3

Posted Speed (kph) 40 60 80 100

≥

600 750 900 1200

Required Min

750 900 1200 1500

50 60 100

Notes:

Figure 1-1: Standard Sign Shapes

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1.

Sizes smaller than the lower limits shall not be used without specific authorisation

2.

The sizes for regulatory signs do not apply to parking and freeway control signs

3.

Sizes should be based on 85th percentile speeds when these differ significantly from posted

4.

Regulatory sign sizes refer to a circle diameter. For the STOP sign, this diameter represents an

5.

Warning sign sizes refer to the apex to apex distance of the side of triangular signs. GIVE WAY s sized as for warning signs

6.

Sizes shown are desirable minimums. Larger signs sizes, particularly for warning signs, may be particularly critical situations.


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When placement of STOP or YIELD signs is considered, priority at a shared use path/roadway intersection should be assigned with consideration of the following: Relative speeds of shared use path and roadway users, Relative volumes of shared use path and roadway traffic, and Relative importance of shared use path and roadway. Speed should not be the sole factor used to determine priority, as it is sometimes appropriate to give priority to a high volume shared use path crossing a low volume street, or to a regional shared use path crossing a minor collector street. When priority is assigned, the least restrictive control that is appropriate should be placed on the lower priority approaches. STOP signs should not be used where YIELD signs would be acceptable. A 750 x 750mm STOP sign or a 900 x 900 x 900mm YIELD sign may be used on shared use paths for added emphasis.

2.2.4

GIVE WAY TO PEDESTRIANS SIGN 303

• • • •

•

•

Sign 302 should have a white background with a broad red border for both permanent and temporary traffic management applications.

GIVE WAY TO PEDESTRIANS sign 303 requires that vehicles should yield right of way to pedestrians roadway or waiting to cross the roadway.

Sign 303 should be used in conjunction with PEDESTRIAN CROSSING marking 603 and GIVE WAY mar

Sign 303 should be used in advance of all marked pedestrian crossings which are not otherwise control sign 301, GIVE WAY sign 302 or traffic signals.

Sign 303 should be located on the right side of the roadway 3.0m in advance of GIVE WAY marking 602 marking 602 should be at least 3.0m and preferably 6.0m in advance of PEDESTRIAN CROSSING ma second Sign 303 should be provided on the left side of the roadway when a median island or other ce provided in advance of the pedestrian crossing.

Sign 303 should have the following colour pattern for both permanent and temporary traffic management a • •

Figure 2-1: Longitudinal Position of Stop Sign 301 and Give Way Sign 302 Version 2.0

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The upper, GIVE WAY sign should have a white background with a broad red border. The lower sign, indicating pedestrians, should have a red background with a white icon and


2.2.5

GIVE WAY TO PEDESTRIANS AND CYCLISTS SIGN 303A

2.2.6

NO ENTRY SIGN 304

NO ENTRY sign 304 indicates that entry is prohibited to all vehicular traffic.

Sign 304 should be used to prohibit “wrong way” entry to a roadway when confusion may exist as to th travel of traffic in the roadway.

Sign 304 should be located on the right and left sides of a one-way roadway. Sign 304 should be o degrees to the direction of “wrong way” travel.

GIVE WAY TO PEDESTRIANS AND CYCLISTS sign 303A requires that vehicles should yield right of way to pedestrians and cyclists crossing the roadway or waiting to cross the roadway.

2.2.7

Sign 303A should be used in conjunction with PEDESTRIAN CROSSING marking 603 and GIVE WAY marking 602. Sign 303A should be used in advance of all marked pedestrian and cycle crossings which are not otherwise controlled by STOP sign 301, GIVE WAY sign 302 or traffic signals. Sign 303A should be located on the right side of the roadway 3.0m in advance of GIVE WAY marking 602. GIVE WAY marking 602 should be at least 3.0m and preferably 6.0m in advance of PEDESTRIAN CROSSING marking 603. A second Sign 303 should be provided on the left side of the roadway when a median island or other central island is provided in advance of the pedestrian crossing. Sign 303A should have the following colour pattern for both permanent and temporary traffic management applications: • •

The upper, GIVE WAY sign should have a white background with a broad red border. The lower sign, indicating a pedestrian and bicycle, should have a red background with a white icon and border.

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Sign 304 should have a red background with a white legend and thin white border for both permanent a traffic management applications.

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ONE WAY SIGNS 305 to 307

TRAFFIC CONTROL DEVICES MA ONE WAY signs 305 to 307 indicates that the only permitted direction of travel, in the road or portion of road on which they are erected, is in the direction indicated by the arrow on the sign. Signs 305 to 307 may be displayed to indicate directions straight ahead, to the right, or t o the left. Signs 305 to 307 should be used in preference to NO ENTRY sign 304 in networks of intersecting one-way streets. Signs 306 and 307 should be used to indicate that the direction of travel in streets intersecting the roadway ahead is in one direction towards them and to inhibit the possibility of “wrong way” entry to such streets. Sign 305 may also be used to indicate that a street is a one-way street in a straight ahead direction (this practice is intended to make drivers aware that when they return to such a street from a private property or a parking area that they must turn only in one direction, it being impractical to indicate the direction of travel at all points of access along a one-way street). When used to indicate the direction of travel in an intersecting street, Signs 306 and 307 should be located on both sides of the intersecting street so that both signs can be seen clearly by drivers travelling in the through street. When used to indicate the direction of travel within a one-way roadway, Sign 305 should be located on the right side of singlelane one-way streets and on both sides of one-way streets with two or more lanes. If necessary, additional signs should be strategically placed with respect to local accesses from properties or parking areas (see Figure 2-2). Signs 305 to 307 should be used for permanent applications and are an exception to the general colour code for the control group of regulatory signs and should have a blue background with a white legend and a thin white border. Signs 7305 to 7307 should be used for temporary applications and should have a yellow background with a black legend and a thin black border. NOTES: •

•

In some situations, Movement Regulation Signs 304, 321 through 328, 346, and/or 347 may be used in place of or in addition to ONE WAY signs to delineate a one-way road system. Specific approval should be obtained from the Municipality for one-way system signing.

Figure 2-2: Use of One Way Signs 305 to 307 with Signs 346 and 347 Version 2.0

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2.3 2.3.1

2.3.3

MANDATORY MOVEMENT SIGNS INTRODUCTION

TURN RIGHT ONLY SIGN 322 and TURN LEFT ONLY

The signs in this group are used to indicate actions that must be taken or that are mandatory.

2.3.2

AHEAD ONLY SIGN 321

AHEAD ONLY sign 321 requires that a vehicle should proceed straight ahead in the direction indicated by t he arrow on the sign. Sign 321 should be located on the right side of a two-way roadway and on the left side of a one-way roadway. The function of the Sign 321 differs from that of the ONE WAY sign 305 in that, while the ONE WAY sign may indicate the mandatory direction in a street at a junction, other directions of travel at the junction may be chosen. Sign 321 indicates that drivers have no other choice but to proceed straight ahead. A 600mm Sign 321 may be mounted on the post below a traffic signal when appropriate. A typical example for the use of Sign 321 would be at a signal-controlled crossroad intersection with a free right turn and a dedicated left turn lane or lanes separated from the through route by a splitter island. In this instance, if the driver is located in one of the through lanes the AHEAD ONLY movement is the only available option and should be signed accordingly. Sign 321 should have a blue background with a white icon and a thin white border for permanent applications. For temporary traffic management applications, Sign 7321 with a yellow background, a black icon and a thin black border

TURN RIGHT ONLY Sign 322 and TURN LEFT ONLY Sign 323 require that t he driver of a vehicle to the right (or to the left - the arrow direction being reversed) at the junction. Signs 322 or 323 should b the far side of a roadway facing drivers to which they apply.

should be used instead.

Signs 322 and 323 should only be used for permanent applications and should have a blue background legend and a thin white border.

Signs 7322 and 7323 should be used for temporary applications and should have a yellow background legend and a thin black border.

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2.3.4

TURN RIGHT AHEAD ONLY SIGN 324 and TURN LEFT AHEAD ONLY SIGN 325

2.3.5

PASS EITHER SIDE SIGN 326

PASS EITHER SIDE sign 326 indicates that vehicles may proceed on either side of an obstruction in such as a traffic island but may end up on different routes.

Sign 326 should be located on a traffic divider, near the nose of the divider, so that there is a minimum 600mm (absolute minimum 300mm) between the edges of the divider and the sign. The most common Sign 326 will be at entrances to collector-distributor roads and road splits.

Sign 326 should only be used for permanent applications and should have a blue background with a whit a thin white border. Sign 7326 should be used for temporary applications and should have a yellow background with a black thin black border.

TURN RIGHT AHEAD ONLY SIGN 324 and TURN LEFT AHEAD ONLY SIGN 325 require that the driver of a vehicle should proceed only to the right or to the left at the next junction ahead. Signs 324 or 325 should be located on the right side of a two-way roadway and on the left side of a one-way roadway at a distance of approximately 50m from the junction to which it applies. Signs 324 or 325 should normally only be provided when the alignment of the approach to the junction is such that the layout of the junction is not readily obvious. A 600mm Sign 324 or 325 may be mounted on a post below a traffic signal where appropriate. Signs 324 and 325 should only be used for permanent applications and should have a blue background with a white legend and a thin white border. Signs 7324 and 7325 should be used for temporary applications and should have a yellow background with a black legend and a thin black border.

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2.3.6

KEEP RIGHT SIGN 327 and KEEP LEFT SIGN 328

2.3.7

ROUNDABOUT SIGN 329

ROUNDABOUT sign 329 indicates that a vehicle should proceed only in a counter clockwise direction at ahead. Sign 329 should be located below GIVE WAY sign 302 in advance of the entry to a roundabout when obvious that the junction ahead is a roundabout on an approach.

Sign 329 should only be used for permanent applications and should have a blue background with a whit a thin white border. Sign 7329 should be used for temporary applications and should have a yellow background with a black thin black border.

2.3.8

U-TURN SIGN 330

KEEP RIGHT SIGN 327 and KEEP LEFT SIGN 328 indicate that a vehicle should only proceed on the right, or, on the left, of an obstruction in the roadway. Signs 327 and 328 should be located as near as possible to the leading edge of the obstruction so that there is at least a clearance of 600mm (absolute minimum 300mm) from the closest path of vehicles. Use of signs 327 and 328 usually applies to traffic islands or refuges in two-way roadways or at the beginning of the median island when a single carriageway road widens to dual carriageway. When such a condition occurs on a vertical curve, it may be effective to mount Dual Type 327 or T ype 328 signs one above the other. Signs 327 and 328 should only be used for permanent applications and should have a blue background with a white legend and a thin white border. Signs 7327 and 7328 should be used for temporary applications and should have a yellow background with a black legend and a thin black border.

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U-TURN sign 330 indicates that a vehicle m ay make a U-turn.


2.4.3

DUAL SPEED LIMIT SIGN ASSEMBLY 345

Many roadways have one speed limit for cars and another lower speed limit for heavy vehicles. Sign conditions should be done using a DUAL SPEED LIMIT assembly 345 as shown in Figure 2-3.

Figure 2-3: Dual Speed Limit Sign Combination (typical)

The combination is made up of two maximum speed limit signs mounted on a single pole, one above the the vehicle type. The sign indicating the speed limit for cars should be mounted topmost.

2.4.4

MINIMUM SPEED LIMIT SIGN 346A and MINIMUM SPEED SIGN 346B

Sign 346A

Sign

MINIMUM SPEED LIMIT sign 346A prohibits vehicles from travelling at speeds lower the speed in kilome indicated by a number on such a sign. Sign 346A shall be placed below the applicable MAXIMUM SPEED

MINIMUM SPEED LIMIT ENDS sign 346B shall be used to indicate the termination of the minimum speed

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2.4.5

NO LEFT TURN SIGN 346 and NO RIGHT TURN SIGN 347

2.4.6

NO U-TURN SIGN 348

NO U-TURN sign 348 indicates the vehicles may not perform a U-turn at the junction or break in the m ahead.

Sign 348 should be located not more than 25m in advance of the point to which the prohibition applies repeated at the point of prohibition. A 600mm Sign 348 may be mounted on the post below a traffic appropriate.

Sign 348 may be required when the parallel carriageway is too narrow to accept safe U-turns or w movement cannot safely be accommodated due to limitations in traffic signal timings or where there is pedestrian movements.

Sign 348 may be made specific to a time of day by means of a QUALIFICATION PLATE sign 365 mount sign.

NO LEFT TURN SIGN 346 and NO RIGHT TURN SIGN 347 indicate that vehicles should not turn to the left or right, as the case may be, at the junction or entrance where the signs are displayed. Signs 346 or 347 should be located on the side of the roadway towards which the illegal turn would be m ade, not more than 25m in advance of the point where the prohibition applies. Signs 346 or 347 should only be used in situations where the turn would be expected to be available under normal circumstances. Their use is not necessary when roadway geometry clearly indicates that such turns are not intended. A 600mm Sign 346 or 347 may be mounted on the post below a traffic signal where appropriate. Signs 346 and 347 should be used for permanent applications should have a white background, a black legend, a thick red diagonal line, and a thick red border. Signs 7346 and 7347 should be used for temporary applications should have a yellow background, a black legend, a thick red diagonal line, and a thick red border.

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Sign 348 should be used for permanent applications and should have a white background, a black legen diagonal line, and a thick red border.

Sign 7348 should be used for temporary applications and should have a yellow background, black legen diagonal line, and a thick red border.

TRAFFIC CONTROL DEVICES MA Sign 7351 should be used for temporary applications and should have a yellow background, black legend, a thick red diagonal line, and a thick red border.

2.4.10

2.4.11

NO CYCLISTS SIGN 353

NO PEDESTRIANS SIGN 352

NO CYCLISTS sign 353 prohibits cyclists from proceeding beyond the sign.

Sign 353 may be displayed where it is required to prohibit cyclist movement or access. If pedestrian m access is not otherwise prohibited, cyclists may proceed provided the y dismount and walk their cycles. Sig be used with a size of 300mm unless a larger size is warranted for conspicuity. NO PEDESTRIANS sign 352 prohibits pedestrians from proceeding beyond the sign. Sign 352 may be displayed in any position where it is required to prohibit pedestrian movement or access, normally across a roadway. Such places may include specific parts of a roadway or junction which pedestrians otherwise might expect to be able to use, but which are considered unsafe due to the traffic management arrangements of the road or junction. Sign 352 should be used with a size of 300mm unless a larger size is warranted for conspicuity. Sign 352 should be used for permanent applications and should have a white background, a black legend, a thick red diagonal line, and a thick red border.

Sign 353 should be used for permanent applications and should have a white background, a black legen diagonal line, and a thick red border.

Sign 7353 should be used for temporary applications and should have a yellow background, black legen diagonal line, and a thick red border.

2.4.12

NO HORNING SIGN 354

Sign 7352 should be used for temporary applications and should have a yellow background, black legend, a thick red diagonal line, and a thick red border.

NO HORNING sign 354 prohibits the use of vehicle horns or other similar audible devices within

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2.5.4

NO PARKING SIGNS 377 to 379

2.5.5

TIME LIMITED NO PARKING SIGNS 377 to 379

NO PARKING signs 377 to 379 indicate that vehicle may not be parked at any time along a section of road within 40m of such a sign. Signs 377 to 379 should include an arrow to indicate the direction of application of the restriction from the sign. Signs 377 to 379 should be located on either the right and/or left side of a road as appropriate. The sign face should be parallel to the kerb line or edge of roadway. The maximum distance between signs to give adequate coverage is 80m. When parking prohibition is applied to a section of roadway for a distance less than 80m, two Signs 377 and 379 should be used, one at each end of the section of roadway. Signs 377 to 379 should be used for permanent applications and should have a white background along with red arrow’s border. The no parking prohibition symbol should have a blue background along with a thick red diagonal line andand a thick red border. Signs 7377 to 7379 should be used for temporary applications and should have a yellow background along with red arrow’s and black border. The no parking prohibition symbol should have a blue background along with a thick red diagonal line and a thick red border.

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Signs 377 to 379 may be made specific to a particular tim e of day by indicating the applicable time period

Signs 380 to 382 should be used for permanent applications and should have a white background al arrow’s, text and border. The no parking prohibition symbol should have a blue background along wi diagonal line and a thick red border.

Signs 7380 to 7382 should be used for temporary applications and should have a yellow background a arrow’s. The text and border should be black. The no parking prohibition symbol should have a blue back with a thick red diagonal line and a thick red border.


2.5.6

PAY-AND-DISPLAY PARKING SIGNS 383 to 385

2.5.7

PAY-AND-DISPLAY PARKING signs 383 to 385 indicate the appropriate tariff to be paid at the designated payment point. The ticket/notice received must be fixed on the inside of the windscreen of the vehicle so that it can be observed from outside the vehicle. Signs 383 and 385 should be located at each end of a row of parking bays served b y a “PAY-AND-DISPLAY” payment point, with the sign face parallel to the kerb line or edge of roadway. The arrows on the signs indicate the point from which the “PAY-AND-DISPLAY” criteria apply and should point towards the payment point. Sign 384 should be located at intermediate intervals between Signs 383 and 385 when the row of parking bays is considered to be of sufficient length as to warrant the provision of additional “ PAY-AND-DISPLAY” payment points. When it is necessary to advise of time limits applicable to the parking area, this should be done using appropriate PARKING TIME LIMIT signs 389 to 391 in addition to Signs 383 to 385. Signs 383 to 385 should be used for permanent applications and should have a white background, a white on blue parking symbol, green icons, arrow’s and border. Signs 7383 to 7385 should be used for temporary applications and should be as Signs 383 to 385 but with a yellow background and black border.

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PARKING FOR DISABLED PERSONS SIGNS 386 to 388

PARKING FOR DISABLED PERSONS signs 386 to 388 indicate that the parking area designated b reserved for use by disabled persons only.

Sign 387 should be used only to identify a single parking bay and should be located on the sidewalk app the centre of the length or width of the parking bay. In such an application, the arrow is omitted.

In other applications, Signs 386 and 388 should be displayed in a similar manner to that described for N signs 377 and 379.

Signs 386 to 388 should be used for permanent applications and should have a white background, a w parking and disabled person symbol, green arrows and border. Signs 7386 to 7388 should be used for temporary applications and should be as Signs 386 to 388 but background and black border.


2.5.8

Figure 2-4 illustrates some of the sign combinations possible within the group.

PARKING TIME LIMIT SIGNS 389 to 391

Figure 2-4 Examples of Sign Combinations in the Parking Group

2.5.9

BUS STOP SIGN 392

PARKING TIME LIMIT signs 389 to 391 indicate that there are time limits to the use of a parking area. The time limit may apply in one or both of two ways: • •

To the maximum duration of the parking period. To the times of day that parking is permitted.

Signs 389 to 391 should include an arrow to indicate the direction of application of the time restrictions indicated on the sign. The messages of Signs 389 to 391 may be varied. The duration of stay limit or the time of day may be omitted if one or other is not appropriate to the circumstances of the parking area. Signs 389 to to 379 391 should be displayed in the manner NO where STOPPING 374 to signs 376 and signs 377 with regard to position andsame frequency. In as areas mixedsigns prohibitive (377NO to PARKING 379) and permissive signs (383 to 391) are used, prohibitive and permissive signs may be mounted next to each other with arrows pointing in appropriate directions. Signs 389 to 391 should be used for permanent applications and should have a white background, a white on blue parking symbol and green text, arrows and border. Signs 7389 to 7391 should be used for temporary applications and should have a yellow background, a white on blue parking symbol, green arrows and black text and border.

BUS STOP sign 392 (example) indicates that the section of roadway designated is reserved for the standing of buses. Sign 392 should be located at the edge of the sidewalk so that it can be seen by ped bus drivers (mounted perpendicular to the kerb). It should be positioned near the end of the loading area the position for the driver to stop and passengers to queue.

Sign 392 should be used for permanent applications and should have a white background. The sign siz are to be in accordance with the Department of Transport requirements.

Sign 7392 should be used for temporary applications and should have a yellow background. The icon sho on a blue background and the horizontal dividing lines should be black. Both Arabic and English text shou black. Version 2.0

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2.5.10

Sign 394 should be used for permanent applications and should have a white background. The car-and and the horizontal dividing lines should be blue. The border, the prohibition icon, and the Arabic and should be red.

TAXI STAND SIGN 393

Sign 7394 should be used for temporary applications and should have a yellow background. The pro should be red while the car-and-person icon, horizontal dividing lines, border, as well as the Arabic an should be black.

2.5.12

SCHOOL BUS PARKING ONLY SIGN 395

TAXI STAND sign 393 indicates that the section of roadway designated is reserved for the stopping or standing of taxis only. The space reserved by Sign 393 should not be used for the unattended parking of taxis. Taxis may only stand in the space while waiting for fares. Taxi stand locations must be approved by the T raffic Police. Sign 393 should be used for permanent applications and should have a white background. The icon and the horizontal dividing lines should be blue. The border and the Arabic and English text should be red. Sign 7393 should be used for temporary applications and should have a yellow background. The icon and the horizontal dividing lines should be black. The border and the Arabic and English text should be black.

2.5.11

DROP-OFF PICK-UP ONLY SIGN 394

SCHOOL BUS PARKING ONLY Sign 395 forbids the parking of any other vehicle type apart from schoo designated area during school hours.

Sign 395 should be used for permanent applications and should have a white background, a white on symbol, green arrows and border. The Arabic and English text should be black.

DROP-OFF PICK-UP ONLY sign 394 indicates that the section of roadway designated is reserved for dropping off or picking up passengers only. The space reserved by Sign 394 should not be used for the unattended parking of any vehicle. Sign 394 may also be used near the beginning of the loading area at bus stops to allow other vehicles to use the bus stop for drop-off and pick-up. Approval should be obtained from the Municipality before installing Sign 394 at a bus stop.

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2.5.13

SCHOOL BUS ONLY DROP OFF / PICK UP SIGN 396

2.6

FREEWAY CONTROL SIGNS

The signs in this group indicate which roads are classified as freeways as well as the application, and re particular “Rules of the Road” relevant to the use of freeways.

2.6.1

BEGINNING OF FREEWAY SIGN 398

SCHOOL BUS ONLY DROP OFF / PICK UP Sign 396 forbids other vehicles from parking or dropping off / picking up persons at the designated area. Sign 396 should be used for permanent applications and should have a white background. The “School Bus and Children Present” icon should be black with red flashing lights and stop sign, on a white background. The prohibition symbol, horizontal divider lines, border and the Arabic and English text should be red.

2.5.14

LOADING AND UNOADING SIGN 397

BEGINNING OF FREEWAY sign 398 indicates that a dual carriageway freeway begins and that the var and prohibitions become effective beyond the sign. Freeway rules invoked by Sign 398 should m ean that, except in case of emergency, no person should: • • • • •

Operate a non-motorised vehicle on or near the freeway. Be on foot on or near the freeway. Stop or reverse a vehicle on the roadway. Stop, park, or drive on a shoulder, median, or roadside area. Drive at a speed less than 70 kph or 30 kph less than the prevailing traffic speed, whicheve

Sign 398 should be located on the right side within the first third of the length of all freeway on ramps an side, and left side (when a median island is available), when a non-freeway roadway becomes a freeway ahead situation.

Sign 398 must not be used in a temporary form. When a freeway is temporarily downgraded during tem management, a normal Sign 398 should be located beyond the end of the work area to indicate a retu freeway operation Sign 398 should have a blue background with a white icon and border. LOADING AND UNLOADING sign 397 indicates that vehicles may be parked in the designated area for loading and unloading only, for the indicated period of time. Sign 397 should be used for permanent applications and should have a white background. The “Vehicle” icon should be black. The border and the Arabic and English text should be red.

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2.6.2

END OF FREEWAY SIGN 399

END OF FREEWAY sign 399 indicates that a freeway is about to end and that freeway rules are no longer applicable. Sign 399 should be located on the right side within the final third of the length of all freeway off-ramps. When a freeway ends, but continues as a non-freeway road, Sign 399 should be located on the right side, and on the left side of the roadway (if a median island is available). If it is required that some of the prohibitions provided for on the freeway be retained, specific prohibition signs should be erected accordingly beyond Sign 399. Sign 399 should be used for permanent applications and should have a blue background with a white icon and border. The diagonal slash should be red. Sign 7399 may be used, if required, in a black icon on yellow background form, when temporary traffic management on a freeway is such that t he freeway cannot operate to the accepted standards of a freeway.

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3.2 3.2.1

ADVANCE WARNING SIGNS INTRODUCTION

The signs in this group should a ll be used in advance of the hazard or potential hazard to which they relate. Consistent with this function they have a unique triangular shape in order to attract the attention of drivers sufficiently early for their message to be effective. Advance warning signs are therefore not appropriate to mark or identify the point location of the hazard. Hazard marker signs should be used instead for this purpose.

3.2.2

JUNCTION AHEAD SIGNS 401 to 406

JUNCTION AHEAD signs 401 to 406 warn of a junction ahead and are generally used on main roads to presence and layout of the junction ahead. • • • • • •

CROSSROAD AHEAD sign 401 T-JUNCTION AHEAD sign 402 SIDE ROAD ON RIGHT AHEAD sign 403 SIDE ROAD ON LEFT AHEAD sign 404 STAGGERED RIGHT SIDE FIRST SIDE ROADS AHEAD sign 405 STAGGERED LEFT SIDE FIRST SIDE ROADS AHEAD sign 406

Signs 401 to 406 should be located on the right side of the roadway at a distance from the junction as Table 3-1. A SUPPLEMENTARY PLATE sign 589 indicating the distance to the junction to the nearest 20 attached below all signs 401 to 406. Version 2.0

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TRAFFIC CONTROL DEVICES MA Signs 7407 to 7409 should be used for temporary applications and should be as signs 407 to 409 but with a yellow background.

3.2.4

3.2.5

CURVE RIGHT AHEAD SIGN 412 and CURVE LEFT AHEAD

MERGING TRAFFIC SIGNS 410 and 411

MERGING TRAFFIC signs 410 and 411 warn of a junction ahead where two streams of traffic travelling in the same direction, and of equal priority, are required t o merge into one stream. Sign 410 should be located on the right side of the through roadway at a distance from the junction as indicated in Table 3-1. Sign 411 should be similarly located on the right side of the joining roadway. Sign 411 should only be used when the angle between the two merging roadways makes it difficult to position Sign 410 at a location at permits it to be viewed from both roadways. Signs 410 and 411 should not be used when the traffic on the joining roadway is subject to stop or give way controls. Signs 410 and 411 should be used for permanent applications and should have a white background, a black icon, and a thick red border. Signs 7410 and 7411 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

CURVE RIGHT AHEAD sign 412 and CURVE LEFT AHEAD sign 413 warn of a curve in the road a direction indicated which requires caution.

Sign 412 should be located on the right side of the roadway at a distance from the start of a right-ha indicated in Table 3-1. A SUPPLEMENTATRY PLATE sign 589 indicating the recommended speed at wh

may be safely negotiated should be attached below sign 412. Sign 413 should be used similarly for a left-h

Signs 412 or 413 should be used in advance of a horizontal curve that can only be negotiated comfortabl speed by one tenth or more of the operating speed of traffic on the preceding straight. Except in circumstances, these signs should not be used on r oadways with a posted speed limit of less than 60kph.

Signs 412 and 413 should be used for permanent applications and should have a white background, a bl a thick red border. Signs 7412 and 7413 should be used for temporary applications and should have a yellow background, and a thick red border.

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3.2.6

REVERSE BENDS AHEAD SIGNS 414 and 415

3.2.7

TWO-WAY TRAFFIC SIGN 416

TWO-WAY TRAFFIC sign 416 warns drivers on a one way roadway that the roadway ahead carries tr directions.

Sign 416 should be located on the left and right hand side of a one way roadway at a distance from the s way roadway as indicated in Table 3-1. A SUPPLEMENTARY PLATE sign 589 indicating the distance t two-way traffic may be attached below Sign 416. The sign may be repeated once the two-way section o fully developed if additional emphasis is needed.

Sign 416 should be used when a one way roadway or carriageway becomes a two way roadway. T commonly occurs at the end of a dual carriage-way. The sign is therefore comm only used with DUAL CAR ENDS AHEAD sign 424.

Sign 416 should be used for permanent applications and should have a white background, a black icon, a border.

Sign 7416 should be used for temporary applications and should have a yellow background, a black ico red border. REVERSE BENDS AHEAD signs 414 and 415 warns that there are sharp reverse direction curves in the road ahead. Signs 414 and 415 should be located on the right side of the roadway at a distance from the start of the first curve as indicated in Table 3-1 and with a clear sight distance. A SUPPLEMENTARY PLATE sign 589 indicating the recommended speed at which the curves may be safely negotiated should be attached below Signs 414 and 415. The symbol direction must always be specified so that it is correctly oriented for the first curve or bend to be entered, e.g., left before right (Sign 414) or right before left (Sign 415). Signs 414 and 415 should only be displayed when: •

• •

The bends can only be negotiated comfortably by reducing speed by more than one tenth of the operating speed of traffic on the preceding straight, and/or The length of the straight between curves is less than 120m, or The nature of the reverse curves is not obvious to approaching drivers.

Signs 414 and 415 should be used for permanent applications and should have a white background, a black icon, and a thick red border. Signs 7414 and 7415 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

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3.2.10

ROUNDABOUT AHEAD SIGN 420

3.2.11

ROAD NARROWS AHEAD SIGNS 421 to 423

ROUNDABOUT AHEAD sign 420 warns of a roundabout ahead. Sign 420 should be located on the right side of the roadway at a distance from the roundabout as indicated in Table 31. A SUPPLEMENTARY PLATE sign 589 indicating the distance to the junction to the nearest 20m should be attached below sign 420. An additional sign m ay be placed on the left side of a one-way carriageway. Sign 420 should only be considered for use when it is not obvious at the distance given in Table 3-1 that there is a roundabout ahead. Sign 420 should be used for permanent applications and should have a white background, a black icon, and a thick red border. Sign 7420 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

ROADS NARROWS AHEAD signs 421 to 423 warn that the roadway ahead narrows from the right side ( side (422) or from both sides (423).

Signs 421 to 423 should be used when the width of a roadway is reduced at a quicker rate than would be standard taper. Hence, the normal application of these should be for temporary narrowing situations at tem management when the extent of the narrowing is less than a full lane width. If the road width reduct reduction in the number of lanes, then LANE ENDS signs 417 or 418 should be used instead. Signs 421 to 423 should be located on the right side of the roadway

Signsred 421border. to 423 should be used for permanent applications and should have a white background, a blac thick Signs 7421 to 7423 should be used for temporary applications and should have a yellow background, a a thick red border.

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3.2.19

Sign 7432 should be used for temporary applications and should have a yellow background, a black ico red border.

QUAYSIDE SIGN 431

3.2.21

ANIMALS AHEAD SIGN 433

QUAYSIDE sign 431 warns that there is an unprotected quayside, jetty, or river bank ahead. The icon on Sign 431 symbol may be reversed. Sign 431 should be located on the right side of a roadway which runs directly along the side of a quay, jetty, or river bank. Sign 431 should, if practical, be positioned in advance of the unprotected quayside, jetty, or river bank by a distance as indicated in Table 3-1. Sign 431 should be used for permanent applications and should have a white background, a black icon, and a thick red border.

Sign 433 should be located on the right side of the road at a distance from the point at which animals are near the roadway as indicated in Table 3-1. SUPPLEMENTARY PLATE sign 589 may be attached bel indicating the distance for which the hazard can be expected to occur.

The icon on the sign may be that representing camels, sheep, or goats. If domestic animals are reg across roadways, temporary signs displaying the appropriate symbol should be set up in advance of the c Such signs should preferably indicate the distance to t he crossing point.

Sign 7431 should be used for temporary applications and should be as sign 431 but with a yellow background.

3.2.20

ANIMALS AHEAD sign 433 warns of the possible presence of animals on, or adjacent to, the road ahead.

DRAWBRIDGE AHEAD SIGN 432



DRAWBRIDGE AHEAD sign 432 warns that there is an opening bridge or drawbridge in the road ahead. Sign 432 should be located as the result of an engineering assessment, meeting the requirements indicated in Table 31, and in consideration of clear sight distance. A SUPPLEMENTARY PLATE sign 589 indicating the distance to the drawbridge should be attached below sign 432. Sign 432 should be used for permanent applications and should have a white background, a black icon, and a thick red border.

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3.2.22

LOW-FLYING AIRCRAFT SIGN 434

3.2.23

LOW-FLYING AIRCRAFT sign 434 warns of the presence of low flying aircraft with the potential of sudden and loud aircraft noise.

SPEED HUMP SIGN 435

SPEED HUMP sign 435 warns that one or more speed humps exist in the roadway ahead.

Sign 434 should be located on the right side of the roadway at a distance from the point where the distraction may occur as indicated in Table 3-1.

Sign 435 should be located on the right side of the roadway at a distance as indicated in T SUPPLEMENTARY PLATE sign 589 should be provided below Sign 435. This may indicate one or following:

Sign 434 should only be provided when aircraft are likely to over-fly the roadway or to fly in close proximity to the roadway.

The distance for which speed humps are provided, or an appropriate text message such as “Speed Hump Calming.”

Sign 434 should be used for permanent applications and should have a white background, a black icon, and a thick red border.


Sign 7434 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.


3.2.24

TUNNEL AHEAD SIGN 436

TUNNEL AHEAD sign 436 warns that there is a tunnel on the ro adway ahead which may be subject to red levels or that certain vehicle classes may be not be permitted to enter the tunnel.

Sign 436 should be located on the right side of the road at a distance from the tunnel entrance as indicate 1.

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TRAFFIC CONTROL DEVICES MA If a prohibition on certain classes of vehicle entering the tunnel exists, Sign 436 should be displayed in combination with the relevant regulatory signs. If necessary, Sign 436 may therefore be placed at a greater distance from the tunnel than given in Table 3-1. On dual carriageway approaches to a tunnel, Sign 436 may be placed on the right and left sides of the roadway.

3.2.26

SLIPPERY SURFACE SIGN 438

Sign 436 should be used for permanent applications and should have a white background, a black icon, and a thick red border. Sign 7436 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

3.2.25

FALLING ROCKS SIGN 437

Sign 438 warns that there is a risk of a slippery surface on the roadway.

SLIPPERY SURFACE sign 438 should be located on the right side of the roadway at a distance in a section of road where the risk of the slippery surface exists, as indicated in Table 3-1. SUPPLEMENTARY PLATE sign 589 may be attached below Sign 438 indicating the distance for be expected to occur (e.g., “For 5 km”).

Sign 438 should be used for permanent applications and should have a white background, a black icon, a border. FALLING ROCKS sign 437 warns that there is a risk that rocks m ay have fallen into the roadway.


The icon on Sign 437 may be reversed. Sign 437 should be located on the right side of the roadway at a distance in advance of a section of road where the risk of falling rocks exists, as indicated in Table 3-1. SUPPLEMENTARY PLATE sign 589 may be attached below Sign 437 indicating the distance for which the hazard can be expected to occur (e.g., “For 5 km”). Sign 437 should be used for permanent applications and should have a white background, a black icon, and a thick red border. Sign 7437 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

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3.2.27

STEEP GRADIENT SIGN 439 and 440

3.2.28

OVERHEAD HIGH VOLTAGE CABLE SIGN 441

OVERHEAD HIGH VOLTAGE CABLE sign 441 indicates that high voltage e lectric cables cross the road. Sign 441 should be used where there is a risk of high vehicles over the legal 4.2m limit using the road. A Supplementary Plate 589 should be fixed below the sign to indicate that height of the cables.


Sign 7441 should be used for temporary applications and should have a yellow background, a black ico red border. STEEP GRADIENT signs 439 and 440 warn drivers that there is a section of road where the length and angle of grade require special precautions. The minimum criteria for providing these signs shall be one of the f ollowing: • • • • •

A 5% grade extending for 1,000m A 6% grade extending for 600m A 7% grade extending for 350m An 8% grade extending for 250m A 9% grade extending for 150m

A SUPPLEMENTARY PLATE sign 589 indicating the distance over which the indicated grade extends (e.g., “Next 1 km”) may be attached below Signs 439 or 440. If a pronounced variance in grades exists in a given section of roadway, then additional sets of signs shall be used with the appropriate distance at which that grade will be encountered. Sign 439 should be used for permanent downward slope applications and Sign 440 should be used for permanent upward slope applications. Both should have a white background, a black icon, and a thick red border. The icon should indicate the angle of grade in percentage terms and include an arrow indicating the direction of flow which shall always point to the right hand side of the sign. Sign 7439 and 7440 should be used for temporary applications and should have a yellow background, a black icon, and a thick red border.

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3.4.2

LANE DROP FROM THE RIGHT SIGN 465 and LANE DROP FROM THE LEFT SIGN 466

3.4.3

BEGINNING/END OF MEDIAN SIGNS 472 and 473

BEGINNING/END OF MEDIAN signs 472 and 473 warn motorists that the roadway ahead has a media ending and that this may, in the case of sign 472, represent a significant hazard in the roadway goin direction, or that, in the case of sign 473, traffic streams become two way beyond the end of the median in turn may be a potentially hazardous condition.

Signs 472 and 473 should be used for permanent applications and should have a white background a border.

Signs 7472 and 7473 should be used for temporary applications and should have a yellow background an border.

LANE DROP signs 465 and 466 warn that a lane drop lies ahead. Signs 465 and 466 should be considered for use in traffic situations that are either known to have substandard geometry that cannot be rectified in the short-term or that have, for whatever reason, not been sufficiently improved by the provision of normal advance warning signs. Signs 465 and 466 may be provided in advance of the point at which the lane is dropped. An appropriate SUPPLEMENTARY PLATE sign 589 indicating the distance to the lane drop mounted below the sign should be provided. At the start of the lane drop taper Signs 465 and 466 should be provided without such a supplementary plate. Signs 465 and 466 should be used for permanent applications and should have a white background and a thin red border. Signs 7465 and 7466 should be used for temporary applications and should have a yellow background and a thin black border. The icon should be black and red, with the arrows representing traffic movement in black and the obstructions in red for both permanent and temporary applications.

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The icon should be black and red, with the arrows representing traffic movement in black and the obstruct


3.4.4

ADDITIONAL LANE SIGNS 480 and 481

3.4.5

JOINING LANE SIGNS 482 and 483

Signs 482 and 483 warn that a lane carrying joining traffic comes into the roadway from the right (or merging and weaving manoeuvres can be expected.

ADDITIONAL LANE signs 480 and 481 warn motorists on a section of road that an additional continuous lane will be added ahead, at the distance indicated below the sign. The principal value of these signs is to reassure drivers, when in heavy traffic, that overtaking opportunities will occur ahead due to the additional lane. Such a sign need only be placed 500m to 1.0km in advance of the start of the additional lane. The sign type is appropriate for freeways and rural roads.

Sign 482 should preferably be positioned so that drivers on the main carriageway and drivers on the ente both see the sign. If this is not possible both signs 482 and 483 may be used to warn drivers. B configurations requiring use of this sign vary widely, there is no recommended minimum or maximu distance. Good engineering judgment should be exercised in locating the signs.

Signs 482 and 483 should be used for permanent applications and should have a white background, a bl a thin red border.

Signs 7482 and 7483 should be used for temporary applications and should have a yellow background, Signs 480border. and 481 should be used for permanent applications and should have a white background, a black icon, and a thin red Signs 7480 and 7481 should be used for temporary applications and should have a yellow background, a black icon, and a thin black border.

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and thin black border.


3.4.6

TRUCK LANE USE SIGNS 484 and 485

3.4.7

LANE USE DIRECTIONAL RESTRICTION SIGN 486

LANE USE DIRECTIONAL RESTRICTION sign 486 imposes a mandatory restriction of movement on on the basic through lanes of a roadway. In the example shown, it warns that the leftmost of the basic th becomes, by regulation, an exclusive left turn lane at the intersection. Drivers wishing to continue straigh leave that lane prior to the intersection; otherwise they will be required to make a left turn.

Sign 486 supplements pavement markings and provides advance notice of lane use control conditions sign is not intended for routine use and its use should be restricted to unusual intersection configurations the basic roadway lanes unexpectedly becomes an exclusive turn lane.

A likely usage of this sign will be at a junction on the through leg containing the left turn, when the geo that one of the basic roadway lanes becomes an exclusive left turn lane. Its use on other legs of the jun ordinarily be required. Sign 486 should be used for permanent applications and should have a white background and Sign 7486 should be used for temporary applications and should have a yellow background and a The icon should be black with t he regulatory symbol in blue with a white arrow. In Abu Dhabi Emirate, trucks are only allowed to use the right-most lane on any road except when preparing to make a left turn. Signs 484 and 485 impose this prohibition on the use of lanes by trucks. The lane prohibition also applies to buses, with two exceptions: • •

On roads having four or more lanes, buses are allowed to use the second lane. On roads having two or three lanes, buses are allowed to leave the right-most lane to overtake other vehicles, but must then return to the right lane.

Signs 484 and 485 should be used for permanent applications and should have a white background and a thin red border. Signs 7484 and 7485 should be used for temporary applications and should have a yellow background and a thin black border. The icon should be black with the prohibitory symbol (circle and diagonal slash) in red on a white background. The signs should be spaced at approximately 5.0km intervals.

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3.4.8

LANES MERGE SIGNS 490 and 492

Sign 490 warns of the merging of two lanes. The use of this sign may be appropriate at at-grade junctions to emphasise the need for drivers to undertake merging actions or manoeuvres. As such the sign only shows the two lanes involved in the merging action. Sign 492 warns of the merging of two lanes on a high-speed free-flow roadway. Such roadways are commonly freeways or freeway ramps where there is little or no tolerance for traffic slowdown or back-up from the point of merge. It is therefore recommended that the signs indicate all lanes at the point of merge. The signs should be erected close to the gore of the merge area on freeways, or on both sides of the roadway at at-grade junctions. Where possible they should be visible to drivers in both approaching traffic streams. Advance signs may also be used, particularly on freeways, and these should include a SUPPLEMENTARY PLATE sign 589. The number of arrows shown on Sign 492 may be varied to reflect the layout of the road in question. Signs 490 and 492 should be used for permanent applications and should have a white background, a black icon, and a thin red border. Signs 7490 and 7492 should be used for temporary applications and should have a yellow background, a black icon, and a thin black border.

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TRAFFIC CONTROL DEVICES MA THIS PAGE IS RESERVED FOR FUTURE FIGURE 4-1: ROUTE NUMBERING SYSTEM

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4.2.5

SIGN BORDERS

All guide signs should be provided with a contrasting border around the perimeter of the sign with the e when an exclusive exit-only white panel is placed at the bottom of an overhead exit direction sign no bord on the white panel. The border colour should be the same as the colour used for place name lettering on

Sign borders should have the following dimensional characteristics where “x” is the height of the lower used for the sign: • •

Width = 0.25x. Corner radius = 1.0x (to the outer edge of the border).

An internal dividing border should be used to separate the stacks of a stack type direction sign. This b have the same width as the outside sign border but should not be provided with radii where it joins

4.2.6

INTERNAL SPACING

The sign face layout of all guide signs should adhere to the internal spacing’s listed below and illustrate example in Figure 4-5: • • • • • • •

Side space between border and right or left line of justification = 0.5x Minimum lateral space between a route number emblem and an arrow = 1.0x Minimum lateral space between text and a Type 5 or Type 8 arrow = 1.0x Minimum lateral space between text and a symbol or emblem = 0.5x Vertical space between the top border and nearest legend = 0.5x Vertical space between the bottom border and nearest legend = 0.5x Vertical space between an upper row of legend and a lower row of legend on a horizontal st

The vertical space between Arabic and English text, or between two rows of Arabic or two rows of En dictated by the letter and number tiles and no additional internal spacing is required.

The horizontal spacing between letters or numbers is also controlled by the letter and number tiles whic provision of a blank tile 0.5x wide for use between consecutive words in a line.

Figure 4-4: Principles of Legibility Version 2.0

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Figure 4-5: Typical Internal Spacing Elements on Guide Signs

4.2.7

ARROWS

The following basic types of arrows are used on guide signs: • • • •

Chevron arrow. Stack-type arrow. Overhead arrows. Map-type arrow.

The individual types of arrows arrow are detailed below. All arrows have been allocatedThe a “Type” number includingofleft and right applications. The should appear in white unless noted otherwise. standard applications arrows Type 1 to Type 8 are illustrated in Figure 4-6.

Figure 4-6: Arrow Type Applications

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TRAFFIC CONTROL DEVICES MA 4.2.7.1

CHEVRON ARROW TYPES 1 and 2

4.2.7.3

Chevron Arrows Types 1 and 2 are used on CHEVRON DIRECTION sign 515 to indicate the action point for a left or right turn at an at-grade junction.

4.2.7.2

STACK SIGN ARROW TYPE 3

Stack Sign Arrows Types 4 and 5 may be used on ADVANCE HORIZONTAL STACK sign 511, ADVANC STACK sign 512, and ADVANCE SUPPLEMENTAL sign 514 to indicate the direction in which drivers mu junction ahead in order to reach the destination named in the stack in which the arrow is located.

However, certain site specific conditions may require a departure from these parameters and guid variations may only be implemented with the prior approval of the Municipality.

4.2.7.4

Stack Sign Arrow Type 3 should only be used pointing straight upwards. The arrow is used on ADVANCE HORIZONTAL STACK sign 511 and ADVANCE VERTICAL STACK sign 512 to indicate that drivers must travel straight-on through the junction ahead to reach the destination named in the stack. When used on sign 512 a Type 3 arrow should only be used in the top stack. However, certain site-specific conditions may require a departure from these parameters and guidelines. Such variations may only be implemented with the prior approval of the Municipality.

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STACK SIGN ARROW TYPE 6

Stack Sign Arrow Type 6 should only be used pointing to the left. The arrow is used on ADVANCE SUPP sign 514 to indicate that drivers must execute a U-turn at the next opportunity in order to reach the destin in the stack. In such an instance drivers are likely to see a f urther sign 514 shortly after the U-turn indicatin into a side road.


Figure 4-7: Approved Supplemental Destination Symbols

4.3 4.3.1

ROUTE MARKER SIGNS USE OF ROUTE MARKER

A route marker sign is a confirmatory guide sign that provides reassurance to motorists that they are on their intended route (or conversely to advise them that they have taken a wrong turn and are not on the route that they planned to be on). Under the Abu Dhabi guide signing system the ongoing routes at all intersections will be signed with the route number as part of the primary advance guide signing. This is true for at-grade junctions (signalised intersections and roundabouts) and for grade-separated interchanges. Thus, every time a motorist travelling on a route approaches a junction, he will receive confirmation of the route he is on. As such, route marker signs are not required to be used after every junction, but only when the distance between junctions is considerable. On rural roads where junctions with numbered routes are infrequent, a route marker should be erected if the distance between primary guide signs containing the emblem of the ongoing route are spaced more than 2.0km apart. In such a case a route marker should be erected approximately 2.0km after the junction, and every 10km thereafter, up to a point not less than 2.0km before the next primary guide sign that contains the emblem of the ongoing route. Version 2.0

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Figure 4-8: Use of Route M arker Signs On urban roadways where there is more turning traffic at major junctions as well as more entering traffi roads between major junctions, a more frequent spacing of route markers is desirable. On urban roads a should be erected if the distance between primary guide signs containing the emblem of the through rout more than 2.0km apart. In such a case a route marker should be erected approximately 500m after the j every 2.0km thereafter, up to a point not less than 1.0km from the next primary guide sign that contains th the through route.


4.6 4.6.1

GRADE-SEPARATED JUNCTION GUIDE SIGNS TYPES OF GRADE-SEPARATED JUNCTION GUIDE SIGNS

4.6.2

ADVANCE EXIT DIRECTION SIGN 551

The following types of guide signs may be specified for use on the free-flowing roadway of a grade-separated junction whether this is on an Emirate Route or an Abu Dhabi Route: • • • • •

ADVANCE EXIT DIRECTION sign. EXIT DIRECTION sign. ONGOING DIRECTION sign. GORE EXIT sign. SUPPLEMENTAL EXIT sign.

A grade-separated junction may occur between two routes which have one of the f ollowing characteristics: •

•

•

Both routes have full access control and all elements of the junction are free flowing and grade separated. Such a junction between two such freeways does not give access to the at-grade street network and is termed a “systems” interchange. One route is a freeway with full access control and the other is essentially an at-grade road (although it may have occasional grade-separated junctions) with only limited access control. Such a junction is termed an “access” interchange allowing connection between the at-grade street network and a freeway, and vice versa. Both routes are essentially at-grade routes with limited access control but have selected grade-separated junctions to improve junction capacity.

The at-grade portion of any of the latter two junction types, including any off-and-on ramps from and to the freeway, should be signed using conventional at-grade direction signs. However, site-specific roadway geometry may, at times, require the at grade roadway to be signed using the following sign types to indicate lane assignment. Such variations can only be implemented with the prior approval of the Municipality. All free-flowing roadways approaching a grade-separated interchange up to and including the exit ramp gore area should be provided with at least one of each of the above sign types with the exception of the SUPPLEMENTAL EXIT sign which is optional.

Figure 4-9: Advance Exit Direction Sign 551

4.6.2.1 •

•

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FUNCTION

To provide advance indication of destinations served by an exit ramp at the interchange or gra intersection ahead. To indicate the lane or lanes that should be followed to reach the exit ramp.


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5.2.19

LANE END ARROW MARKING 656

5.2.20

LANE END ARROW marking 656 is used to warn that a lane on a multilane roadway is ending ahead and that they should move out of that lane in the direction indicated at the earliest safe opportunity to do so. Marking 656 should consist of a white straight arrow oriented at a 20 degree rotation to the longitudinal axis of the lane. The arrow should be centred in the lane such that its extremities are equidistant from the lane edge on each side. Marking 656 should be used when a long-running lane on a multilane roadway ends or at the end of a parallel-lanetype entrance ramp. It is not intended for use on a tapered entrance ramp. Marking 656 should be repeated in a series of two or preferably three markings. The last of the arrows in the series should be positioned at the end of the lane just prior to the point where the lane begins to decrease in width. The spacing between each arrow should be as in Table 5-5. Table 5-5 Lane Arrows Spacing Posted Speed 40kph 60kph 80kph 100kph

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Spacing 24m 32m 40m 48m

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CHEVRON MARKING 657

CHEVRON marking 657 should be used to provide warning to motorists of a divergence of traffic lanes tra same direction.

Marking 657 should consist of diagonal white lines arranged in a chevron pattern as depicted above. Th should point towards the oncoming traffic such that the sloping legs of the CHEVRON are seen to split streams of traffic, “pushing” them away from one another. Marking 657 should be repeated within beginning at the theoretical nose (painted nose) of an exit or divergence point and cease at the p CHEVRON marking 657 should not be used within the gore area of converging streams of traffic.

Marking 657 should only be used in areas not intended for travel or parking and should always be sepa travel area by an EDGE LINE marking 613 or a CHANNELIZING LINE marking 612.

5.2.20.1 DETAIL OF A GORE AREA


5.7 5.7.1

TEXT PAVEMENT MARKINGS TEXT SYMBOL MARKING 695

TEXT SYMBOL marking 695 may be used to provide specific localised amplification of existing regulatory guide road signs or pavement markings.

Marking 695 should be made using the Municipality’s standard Arabic (Naskh) and English (Transport) fon

English text messages should use only upper case letters and, if appropriate, numbers. Stencils for te should be prepared based on 400mm “x” height letters on their tile backgrounds which are then distorted five times in the vertical direction while maintaining an unaltered width. The nominal height of the resultan and the English upper case letters should be 2800mm.

A text symbol message should be limited in length so that it can be centred between parallel longitudin markings, or such a marking and a kerb line, with a minimum clearance on each side of 150mm.

When both Arabic and English messages are required the English should be placed above the Arabic. Th between the Arabic and English text should be achieved by stacking the distorted respective tiles.

Text pavement markings may be used to supplement other pavement markings or signs only whe authorised or directed by the Municipality.

The use of text pavement markings should be strictly limited to situations where no other option to presen the required message to drivers is available.

The provision of such markings in this document should not be taken as an endorsement of their use. Ra described here to provide guidance should there be a requirement for such in isolated instances.

5.8 5.8.1

RAIL/TRANSIT CROSSING MARKINGS GENERAL

A summary of requirements for pavement markings on sealed approached to crossings is as follows: •

• •

Figure 5-6: Kerb Painting and Pavement Marking for Fire Hydrants Adjacent to Parking Spaces

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The RAIL CROSSING marking 1101 RAIL   X shall be used on all high-speed ap adequate seal width except at crossings on side roads where the distance to the c rossing is less than Stop line marking 601 shall be provided on all approaches for all cases. NO PASSING LINE marking 611 (overtaking not permitted) shall be used for the centrel carriageway approaches.


5.8.2

RAIL CROSSING MARKING 1101

The RAIL CROSSING marking 1101 RAIL   X shall be as shown. Except for crossings on side roads, the marking shall be provided on all approaches where the speed limit is greater than 50 kph. The marking is to read sequentially. On multilane roads a separate marking shall be placed in each approach lane. On through road approaches to a crossing, the marking shall begin approximately 10m prior to the first advance sign, but positioned if necessary to provide adequate visual impact giving at least 50m clear viewing distance to the near edge of the marking. The marking shall contain the following dimensions: • • • •

X: 6.0m height by 3.0m width, centred in the travel lane Arabic text: 5.0m maximum height by 3.5m maximum width per line RAIL: 5.0m maximum height by 3.5m maximum width per line Spacing between characters: 7.5m

When implemented at stop controlled level crossings, the layout shall be as indicated in Figure 5-7 below.

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Figure 5-7: Approach Layout for Stop-Controlled Rail Crossing

Railway crossing with stop control shall have advance warning via a Rail Crossing sign 2010 as describ 10.3 mounted a minimum of 300m prior to the crossing, with a Stop Control Ahead sign 428 as describ 3.2.16 mounted a minimum of 200m prior to the crossing. The Rail Crossing Stop Assembly sign 1002 is in Section 10.3.3.


5.8.3

RAIL CROSSING CLEAR ZONE MARKING 1102

Clear zone markings and signage shall be used to discourage traffic queuing on a crossing, as detailed below. Where used, RAIL CROSSING CLEAR ZONE marking 1102 shall comprise a white diamond hatch marking as set out in Figure 5-8. The lines f orming the diamond pattern shall be 150mm wide. Where queuing is a problem in one direction only, the box marking shall be placed on that side of the pavement only as shown in Figure 5-8 below. If queuing is a problem in both directions of travel, the marking shall be placed on both sides.

Figure 5-8: Clear Zone Marking

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TRAFFIC CONTROL DEVICES MA The colour of delineators should, in all cases, conform to the yellow or white colour of edge lines. Single delineators should be provided on the right side of expressway roadways and on at least one side of interchange ramps. These delineators may be provided on other classes of roads. Single delineators may be provided on the left side of roadways and should be provided on the outside of bends on interchange ramps. Where median crossovers are provided for official or emergency use on divided highways and these crossovers are to be marked, a double-yellow delineator should be placed on the left side of the through roadway on the far side of the crossover for each roadway. Red delineators may be used on the reverse side of any delineator whenever it would be viewed by a motorist travelling in the wrong direction on that particular ramp or roadway. Delineators of the appropriate colour may be used to indicate the narrowing of a pavement. The delineators should be used adjacent to the lane affected for the full length of the convergence and should be so placed and spaced to show the width reduction. Delineation is not necessary for the traffic moving in the direction of a wider pavement or on the side of the roadway where the alignment is not affected by the convergence. On a highway with continuous delineation on either or both sides, delineators should be carried through the transition and a closer spacing may be warranted. Delineation is optional on sections of roadway between interchanges where fixed-source lighting is in operation. Delineators, if used, should be mounted on suitable supports so the top of the reflecting head is approximately 1.2m above the near roadway edge. Delineators should be placed not less than 1.0m or more than 2.0m outside the outer edge of the shoulder, or if appropriate, in the line of the guardrail. Delineators may be mounted on the guardrail at a height less than 1.2m. Delineators should be placed at a constant distance from the edge of the roadway. However, where a guardrail or other obstruction intrudes into the space between the pavement edge and the extension of the line of delineators, the delineators should be in line with or inside the innermost edge of the obstruction. Typical delineator installations are shown in Figure 6-2.

Figure 6-2: Typical Delineator Installation

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TRAFFIC CONTROL DEVICES MA Delineators should normally be spaced at 60m to 160m intervals. When normal uniform spacing is interrupted by driveways, crossroads, or similar interruptions, delineators falling within such areas may be moved in either direction, a distance not exceeding one-quarter of the normal spacing. Delineators still falling within such areas should be eliminated. On expressways, a normal delineator spacing is 100m. Double or vertically elongated delineators should be installed at 30m intervals along acceleration and deceleration lanes. Spacing should be adjusted on approaches and throughout horizontal bends so that several delineators are always visible to the driver. Table 6-1 shows suggested maximum spacing for delineators at bends. Table 6-1 Suggested Maximum Spacing for Highway Delineators on Bends Radius of Bend (R) Spacing on Bend (S) 15m 30m 45m 60m 75m 90m 120m 150m 180m 210m 240m 270m 300m

6.0m 7.5m 9.0m 10.5m 12.0m 13.5m 16.5m 19.5m 21.0m 22.5m 24.0m 25.5m 27.0m

Notes: 1.

Spacing for radii not shown may be interpolated from the table. The minimum spacing should be 6.0m. The spacing of the first delineator on a tangent adjacent to a bend should be 2S, the second, 3S, and the third, 6S, but not to exceed 100m

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7

TEMPORARY TRAFFIC MANAGEMENT

Please refer to the Abu Dhabi W ork Zone Design Manual

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8.2.1

ROAD JUNCTIONS IN COMMUNITY AREAS

Figure 8-1 depicts several representative configurations of situations found on local access roads within a community. The sizes of signs and pavement markings are shown in a relative scale and are based on a speed limit of 40kph. NOTES: 1. Join adjacent sections of NO PASSING LINE marking 611 when less than 32m apart. 2. Break in NO PASSING LINE marking 611 at junctions should be a minimum of 8.0m, centred on intersecting road centreline. 3. Paint all kerbs within junctions and on curves with VISIBILITY PAINTING marking 691. The use of VISIBILITY PAINTING marking 691, as illustrated, is intended to help identify junctions under limited or adverse lighting conditions. In general, therefore, the sections of marked kerbs illustrated should not be connected unless the unmarked section between is less than 8.0m in length. 4. The use of MULTIPLE CHEVRON signs 456, 457 and 458 is optional. These signs should not be used unless lighting, background, or geometry obscure the presence of a termination or change in direction of the roadway alignment. Ordinarily the change in roadway direction will be evident as a result of pavement markings otherwise required; kerb painting; and/or street lighting. 5. See Section 2.2 for guidance on the determination of use of STOP sign 301 or GIVE WAY sign 302. 6. Recommended setbacks for STOP LINE marking 601 and GIVE WAY LINE marking 602 are t ypically 1.0m as shown in Section 5.2. Greater setbacks may be required to accommodate left turning traffic depending on intersection geometry. The absolute minimum setback should be 500mm.

Figure 8-1: Road Junctions in Community Area

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8.2.2

ARTERIAL MIDBLOCK U-TURN AND LOCAL ROAD T-JUNCTION

Figure 8-2 depicts two typical situations on a 6 lane d ual carriageway. One situation is a mid-block U-turn located away from an intersecting roadway and intended solely for the purpose of making U-turns (Figure 8-3 depicts a similar situation on a four-lane dual carriageway where a midblock U-turn and left turn are combined). The other situation is a local road T-junction with an arterial. The junction depicted in this figure is only provided with radii on the corners. (Figure 8-3 shows a similar configuration, but with short tapers to facilitate turning.) The sizing of signs and pavement markings are shown in a relative scale and are based on a speed limit of 60kph on the divided road and 40kph on the intersecting road. NOTES: 1. Advance warning for midblock U-turns should be posted and the distance to the point of U-turn displayed. 2. Appropriate ADVANCE SUPPLEMENTAL sign 514 may be used only when an approved supplemental destination is in the vicinity. 3. When geometry dictates that long vehicles are not permitted to make a U-turn, a NO GOODS VEHICLES sign 351 with a QUALIFICATION PLATE sign 365 indicating the maximum length of vehicle permitted to U-turn should be used. Sign 351 should be located at a point as close as possible after the turn lane becomes fully developed. If the geometry is such that any sized vehicle may make a U-turn, then sign 351 is omitted and, apart from STOP sign 301, no further signing is required. 4. See Section 2.2 for guidance on the determination of use of STOP sign 301 or GIVE WAY sign 302. 5. Paint kerbs with VISIBILITY PAINTING marking 691 only in relation to the U-turn lane and its opening in the median, and the immediate vicinity of the side road junction. 6. LANE LINE marking 654 should not be marked within the vehicle swept area at the U-turn. 7. Geometric design should clearly indicate the prohibition of opposing traffic entering the median opening. In situations where geometry does not clearly make that evident appropriate regulatory signs may be utilised to prohibit such entries.

Figure 8-2: Arterial Midblock U-Turn and Local Road T-Junction

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8.2.4

SERVICE ROAD CONNECTIONS TO AN ARTERIAL

Figure 8-4 depicts a number of typical situations that are commonly found on service roads adjacent to arterial roadways. The sizes of signs and pavement markings are shown in a relative scale and are based on a speed limit of 60kph on the main road, 40kph on secondary roads, and 25kph on service roads (same sizing as 40kph). This figure also illustrates a typical mid-block signalised pedestrian crossing. NOTES: 1. PARKING TIME LIMIT signs 389 and 391 are shown to illustrate one possible application of parking control signs. A variety of other applications is also possible. 2. ONE WAY sign 306 is shown in this situation to indicate that the service road is one way in the direction stipulated, but to not inhibit drivers f rom entering the main road with a more or less straight ahead movement. 3. The road geometry in situations such as this, where vehicles may have a tendency to park illegally, should be such that discourages such illegal parking. 4. NO sign 304 is shown in this instance since sight restrictions inhibit visibility of a ONE WAY sign 306 from theENTRY side road. 5. PEDESTRIAN CROSSING marking 603 is specifically used in this situation as an added safety precaution because of sight distance. With the building lines near the side road as illustrated, crossing pedestrians would be difficult to see until they are actually in the road. The use of PEDESTRIAN CROSSING marking at other pedestrian crossing points must be considered on a location-by-location basis. In general, on service roads where pedestrians can be in the road at any place for purposes of accessing parked cars, the installation of painted crossings is generally not warranted. 6. A mid-block signalised pedestrian crossing is shown crossing the main roadway and service roads. Priority control on the main roadway should be by traffic signal. Pedestrian priority on the service roads is provided by GIVE WAY TO PEDESTRIANS sign 303. 7. VISIBILITY PAINTING marking 691 should be used in the vicinity of all service road connections to and from the main roadway and at junctions between side roads and the main roadway and service roads.

Figure 8-4: Service Road Connections to an Arterial

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8.2.5

LARGE ROUNDABOUT

Figure 8-5 depicts a representative configuration of a full size roundabout. The sizes of signs and pavement markings are shown at a relative scale and are based on a speed limit of 60kph on the approach roads. (See Figure 8-6 for details relevant to signalisation). NOTES: 1. ADVANCE HORIZONTAL STACK sign 511 may be required in place of ADVANCE VERTICAL STACK sign 512. Such advance signs should be located as far in advance of the roundabout as possible and practical (up to 250m). 2. Appropriate TRAIL BLAZER sign or ADVANCE SUPPLEMENTAL sign 514 may be used only when an approved trailblazing or supplemental destination is in the vicinity. See Chapter 4 for guidance on approved destinations. In general, a CHEVRON DIRECTION sign 515 should not be used for a supplemental destination. 3. MULTIPLE CHEVRON RIGHT sign 456 should be used only if the visible presence of the roundabout is not clear to approaching drivers due to geometry or surroundings. 4. LANE ARROWS shown are indicative only. Actual arrows used in each lane should be based on trafficengineering analysis of the junction. 5. If street lighting poles are present and located symmetrically with respect to each approach, consideration may be given to mounting street name signs on such. 6. Paint all kerbs within junction and vicinity with VISIBILITY PAINTING marking 691 (not shown in Figure 8-5). As a guideline marking 691 should commence at approximately the same point as Marking 612. 7. If the exit leg of a junction enters or is adjacent to a community the name of the community may be displayed on a TEXT sign 588 on the right side of the road at a suitable distance before the first local street junction serving the community. 8. The free right turn has been illustrated for the situation where it intersects the crossroad without a fully developed acceleration lane. If a full acceleration lane is present then a treatment as shown i n Figure 8-7 should be used. 9. Depending on the length of the right turn lane the positioning of Signs 508 (or 514) and 512 (or 511) may require adjustment. None should be located after the start of the turn lane taper and the distances between signs carefully controlled. Preferred spacing is 50m minimum.

Figure 8-5: Large Roundabout Version 2.0

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8.2.6

LARGE SIGNALISED ROUNDABOUT

Figure 8-6 depicts a representative configuration of a signalised roundabout. The sizes of signs and pavement markings are shown at a relative scale and are based on a speed limit of 60kph on the approach roads. Signing is shown only for one approach. Other approaches are s imilar. NOTES: 1. Figure 8-6 should be read in conjunction with Figure 8-5 and Section 8.2.5. Figure 8-6 is an adaptation to illustrate the effects of signalizing the junction shown in Figure 8-5. 2. The free right turn has been illustrated for the situation where it intersects the crossroad without a fully developed acceleration lane. If a full acceleration lane is present then a treatment as shown i n Figure 8-7 should be used. 3. Depending on the length of the right-turn lane the positioning of signs 430, 514 and 511 (512) may require adjustment. None should be located after the start of the turn-lane taper and the distances between signs should be carefully controlled. Preferred spacing is 50m minimum. 4. TRAFFIC SIGNALS AHEAD sign 430 may be used for a period of three to six months when traffic signals are installed on an existing unsignalised roundabout. 5. The preferred location of the CHEVRON DIRECTION sign 515 is on the channelizing island formed by the free right-turn lane. If insufficient space is available on the island sign 515 may be placed on the right side of the road at the beginning of curve. In such case a PASS EITHER SIDE sign 326 should be located in the island. 6. CHANNELIZATION LINE marking 612 for the right-turn lane is one standard length (L=27m for 60kph; see Chapter 5, Table 5-3) measured from the curve point of the turning lane. 7. If the exit leg of a junction enters or is adjacent to a community the name of the community may be displayed on a TEXT sign 588 on the right side of the road at a suitable distance before the first local street junction serving the community.

Figure 8-6: Large Signalised Roundabout Version 2.0

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8.2.7

SIGNALISED INTERSECTION

Figure 8-7 depicts a representative configuration of a signalised intersection. The sizes of signs and pavement markings are shown at a relative scale and are based on a speed limit of 60kph on the approach roads. Signing is shown only for one approach. Other approaches are s imilar. NOTES: 1. ADVANCE HORIZONTAL STACK sign 511 should be located as far from the intersection as possible and practical (up to 250m). If should be located no closer to the intersection than the beginning of taper for the left or right turn lane if a closer location must be used. 2. Appropriate ADVANCE SUPPLEMENTAL sign 514 may be used only when an approved supplemental destination is in the vicinity. 3. The preferred location of the CHEVRON DIRECTION sign 515 is on the channelizing island formed by the free right turn lane. If insufficient space is available in the island sign 515 may be placed on the right side of the road at the beginning of curve. In such case a PASS EITHER SIDE sign 326 may be located in the island. 4. Intersection is shown with pedestrian crossings. This may not be required in all locations and would thus be omitted when not applicable. 5. Configuration shown assumes design of adequate acceleration lanes for free flow merge condition. 6. CHANNELIZATION LINE marking 612 for the development of the left-turn lane is shown at double the standard length (2L=54m for 60kph). This is due to the left-turn lane being a dual lane and the need for traffic to enter the lanes further from the intersection. The CHANNELIZATION LINE for the right-turn lane is one standard length measured from the curve point of the turning lane. 7. Paint all kerbs within junction and vicinity with VISIBILITY PAINTING marking 691 (not shown). Marking 691 should commence before the start of any added turn lane and terminate after the junction beyond the end of any merge lanes.

Figure 8-7: Signalised Intersection Version 2.0

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8.2.8

FREEWAY CROSSROAD WITH SMALL ROUNDABOUTS

Figure 8-8 depicts a representative configuration of a junction at the terminal end of a freeway grade separated interchange. The junction represented is a dual roundabout configuration on an undivided crossroad with assumed speed of 60kph. Figures 8-5, 8-6, or 8-7 may be referred to for applicable signing and pavement markings if other junction configurations are used at an interchange terminal end. Signing is shown only for traffic coming from the bottom of the figure and from the left of the figure. Signing for other approaches is similar. NOTES: 1. See Figure 8-11 for positioning of Signs 399 and 512 on the exit ramp. The position of Sign 398 on the entrance ramp is similar. 2. Double roundabouts create two separate points of decision for traffic which must use both roundabouts to reach their destination. Therefore, pairs of ADVANCE VERTICAL STACK sign 512 are required to navigate drivers through the junction one decision at a time. The second sign in the series must be positioned where geometry best permits. This example shows placement within the roundabout. If clear distance between the roundabout pair exceeds about 75m, then placement of the sign between the roundabouts is preferred. 3. Typically NO ENTRY signs 304 are not required on exits from roundabouts due to ramp-end geometry. However, where there is even a remote possibility of drivers entering a freeway traveling in the wrong direction, resulting in almost certain serious consequences, the posting of a pair of NO ENTRY signs is justified. 4. Paint all kerbs within junction and vicinity with VISIBILITY PAINTING marking 691 (not shown). 5. MULTIPLE CHEVRON RIGHT sign 456 should be used only if the visible presence of the roundabout is not clear to approaching drivers due to geometry or surroundings.

Figure 8-8: Freeway Crossroad with Small Roundabouts Version 2.0

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8.2.10

SMALL ROUNDABOUTS

Figure 8-10 depicts a representative configuration of a junction between two intersecting single carriageway roads in the form of a small roundabout. The junction is subject to wide variations in geometric treatment. The example illustrated assumes a standard crossroad junction between two local roads. NOTES: 1. A small roundabout configuration will not, under normal circumstances be used at the junction of numbered routes. Therefore no guide signing applications are shown in Figure 8-10. 2. Where the median of a roundabout is not raised and kerbed, two EDGE LINE markings 613 spaced 150mm apart should be used to delineate the roundabout and the MULTIPLE CHEVRONS RIGHT Sign 456 shown shall be omitted. 3. GIVE WAY sign 302 along with GIVE WAY marking 602 will be used in the same manner as shown for a Large Roundabout in Figure 8-5. 4. ROUNDABOUT sign 329 should be mounted on the same post and directly above GIVE WAY sign 302 to direct drivers to travel in a c irculatory fashion through the junction as with a standard roundabout configuration. 5. ROUNDABOUT AHEAD sign 420 is shown on only one leg of the roundabout to emphasise that its use is not compulsory for all situations, but is determined based on engineering judgment and sight distances.

Figure 8-10: Small Roundabout

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8.3.3

INTERCHANGE WITH A C-D ROAD

Figure 8-13 depicts an interchange in the form of a cloverleaf with a C-D road. Figure 8-13 is presented based upon a single-lane exit (not a lane drop). The sizes of signs are shown at a relative scale and are based on a speed limit of 100kph. Regulatory and warning signs and pavement markings are not shown. NOTES: 1. EXTRA FORWARD ADVANCE EXIT DIRECTION sign 551 and/or second ONGOING DIRECTION sign 553 at the exit point may be added if interchange complexity and location warrants (see Section 4.6.4). 2. Second EXIT DIRECTION sign 552 is shown located in advance of the overpass rather than at the theoretical gore (painted nose) to prevent overpass from obscuring the view of the sign. If the interchange is large and the distance between the front side of the overpass and the exit to the loop ramp exceeds 150m it may be beneficial to provide a second ADVANCE EXIT DIRECTION sign 551, displaying the appropriate distance, prior to the structure with an EXIT DIRECTION sign 552 located at the theoretical nose. The EXIT DIRECTION sign for the

3. 4. 5. 6. 7.

second exit is displayed with an "EXIT" (Lane Drop) panel even though corresponding ADVANCE EXIT DIRECTION signs do not have the "EXIT" (Lane Drop) panels. This is due to the short auxiliary lane developed between the entering and exiting loop ramps and the need to advise entering drivers to leave that lane or be forced to exit. If by design the speed limit on the C-D road is reduced to less than 100kph, sign letter size for signs on the C-D road may be reduced accordingly. See Figure 8-11 for pavement markings for this configuration. If the exit lane configuration is different the EXIT DIRECTION sign 552 may need to be varied to indicate more than one lane and/or a lane drop situation. It is a basic principle of the guide signing system that there should never be more arrows displayed at one point across the roadway than there are lanes on the road. ADVANCE EXIT DIRECTION sign 551 would not normally be required for an uncomplicated alignment. However, site specific geometry, such as a merging C-D road after FORWARD ADVANCE EXIT DIRECTION sign 551, will at times require ADVANCE EXIT DIRECTION sign 551 to be used.

Figure 8-13: Interchange with a C-D Road Version 2.0

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8.3.4

FREEWAY SYSTEMS INTERCHANGE WITH TWO CLOSELY SPACED EXITS

Figure 8-14 depicts a systems (freeway to freeway) interchange with two closely spaced exits directly from the mainline. Figure 8-14 is presented based upon successive single lane exits, neither of which are lane drops. The sizes of signs are shown at a relative scale and are based on a speed limit of 100kph. Regulatory and warning signs and pavement markings are not shown. NOTES: 1. The EXIT DIRECTION sign for the second exit is displayed with an "EXIT" (Lane Drop) panel even though corresponding ADVANCE EXIT DIRECTION signs do not have the "EXIT" (Lane Drop) panels. This is due to the short auxiliary lane developed between the entering and exiting loop ramps and the need to advise entering drivers to leave that lane or be forced to exit. 2. The sign positioning for second EXIT DIRECTION sign 552 is subject to whether the approach is at an overpass or an underpass (see Section 8.3.3). 3. It is a basic principle of the guide signing system that there should never be more arrows displayed at one point across the roadway than there are lanes on the road.

Figure 8-14: Freeway Systems Interchange with Two Closed Spaced Exits

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8.3.5

FREEWAY SYSTEMS INTERCHANGE WITH A TWO LANE EXIT AND RAMP SPLIT

Figure 8-15 depicts a systems (freeway to freeway) interchange with a two lane exit that splits shortly after the exit point. Figure 8-15 is presented based upon the ramp split not being a lane drop (two lanes continue to left destination and one lane exits from the ramp to right destination) and being located less than 500m from the first exit. The sizes of signs are shown at a relative scale and are based on a speed limit of 100kph. Regulatory and warning signs and pavement markings are not shown. NOTES: 1. When the distance between the exit and the ramp split exceeds 500m, consideration should be given to including an ADVANCE EXIT DIRECTION sign 551 between the exit and the ramp split. 2. It is a basic principle of the guide signing system that there should never be more arrows displayed at one point across the roadway than there are lanes on the road. The display shown at the theoretical nose must therefore be positioned so that the exit sign arrows are fully over developed exit lanes.

Figure 8-15: Freeway Systems Interchange with a Two Lane Exit and Ramp Split

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8.3.6

FREE-FLOW RAMP CONDITIONS

Figure 8-16 depicts pavement marking conditions that are not otherwise covered in an incidental manner in other figures in this Chapter. Pavement marking sizes are based on a speed limit of 100kph. The retro-reflective version of pavement markings is shown for a freeway condition. For non-freeway conditions the standard version of the markings may be used. NOTES: 1. The spacing of retro-reflective RPM marking R for EDGE LINE marking 613R should be reduced to 4m within the gore area. 2. When the length of the auxiliary lane exceeds 1000m, the entrance and exit ramps should be treated independently. If the auxiliary lane is 600m to 1000m in length, then it should be marked as shown. If the auxiliary lane is less than 600m long, the CHANNELIZATION LINE marking 612R at the exit should be replaced by a section of ENHANCED LANE LINE marking 655R of at least equal length.

Figure 8-16: Free-Flow Ramp Conditions

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9

TRAFFIC SIGNALS

Please refer to the Abu Dhabi Traffic Signals and Electronic Warning and Information Systems Manual.

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RAIL CROSSING WARNING SIGN 2010

10.3.1.8

COUNTDOWN MARKER SIGN 2012

Where visibility of the rail crossing is limited due to heavy traffic or road geometrics, countdown markers shall be provided in the interval between the advance warning sign (Assembly 1003) closest to the cros crossing itself. RAIL CROSSING WARNING sign 2010 shall consist of a white triangular sign meeting the requirements of warning signs, with a black legend and red border.

10.3.1.7

RAIL CROSSING SIGNAL REGULATORY SIGN 2011

Markers shall contain red diagonal stripes on a white background. Diagonal stripes shall be pointed dow left if mounted on the right side of the carriageway. If an advance warning sign is also provided on the l carriageway with a crossing assembly similarly on the left, countdown markers shall be provided on th well, except with the stripes pointed downward and to the right.

A total of three markers shall be placed at evenly-spaced intervals between Assembly 1003 and the stop just prior to Assembly 1001 (at the crossing). The markers shall be installed in the order stripes, from three to two to one.

10.3.1.9

CLEAR ZONE SIGN 2013

The KEEP CROSSING CLEAR sign is to be located so that it does not obstruct the crossing signals o signs. A mounting height of less than 1.0m may be required. It shall be a text sign with black legend an white background. It shall be installed wherever clear zone markings are used. It may also be install engineering studies where it is observed that vehicles frequently stop or move too slowly across the track of traffic condition, creating a potential hazard.

RAIL CROSSING SIGNAL REGULATORY sign 2011 shall consist of a white rectangular sign with black text and border, with a symbol showing a representation of the rail crossing signals (black with red and amber display graphics) at the top of the display. Text shall require drivers to “ Obey Signals at Crossing”. The sign shall be mounted beneath Sign 2010 and shall be used for all signalised rail crossings.

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LRT CROSSING WARNING SIGN 2015

10.3.2

RAIL CROSSING WARNING SIGNAL ASSEMBLY 1001

Sign 2000

Sign 2001

Sign 2002

Rail Crossing Warning Sign 2015 shall consist of a white triangular sign meeting the requirements of warning signs with a black legend and red border. The sign shall be placed at the top of Assembly 1013.

10.3.1.11

LRT PLATE SIGN 2021

Rail Crossing Warning Signal Assembly 1001 shall include the following signage, configured to provi oncoming rail vehicles. It shall include the following: • • •

LRT Plate Sign 2021 shall consist of a white plate with black tram symbol and border. Sign 2021 shall be placed below Sign 2000 and shall simply show that the crossing represents an LRT facility.

Sign 2000 – Rail Crossing Sign Sign 2001 – Supplementary Plate indicating number of tracks Sign 2002 – Signal backplate and twin flashing red signals and for amber signal which g red signals

Assembly 1001 shall be used in conjunction with gate control devices that restrict all vehicle and pedestr the grade crossing area. It shall be placed a minimum of 15m prior to the outer edge of the first track, with Marking 601 provided 5.0m prior to the assembly across the entire carriageway approach.

Assembly 1001 shall be placed on either side of the approaching carriageway (dual carriageway route single carriageway (bi-directional road) approach, Assembly 1001 shall be provided on both sides

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10.5.3

ADVANCE WARNING OF LRT CROSSING (STOP-CONTROLLED, NO SIGNAL OR GATE)

For local roads approaching an LRT crossing where the LRT facility is travelling on the outer edge of an urban roadway (but physically separated), a stand-alone Advance LRT Crossing Warning Sign 2015 shall be mounted a minimum 200m from the crossing.

10.5.4

STOP CONTROL ASSEMBLY 2016

Assembly 2016 (Sign 301 plus Sign 2003, Sign 2021 as alternative)

For local roads crossing an LRT facility travelling on the outer edge of an urban roadway (but physically separated), Assembly 2016 shall consist of a STOP sign 301 placed a minimum of 10m prior to the outer edge of the first track with a “Watch for Trains” sign 2003 placed below the stop sign. STOP LINE marking 601 shall be provided in the direction of travel approaching the LRT crossing, 5.0m prior to the assembly across the entire carriageway approach. Optionally, Sign 2021 (LRT plate) may be used instead of Sign 2003, depending on local familiarity with urban light rail operations. However, for initial operations of light rail services, the “watch for trains” sign provides more direct instructions to the driver. Assembly 2016 shall be placed on either side of the approaching carriageway (dual carriageway route), and on the right side of single carriageway routes.

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11.2.2

CYCLE LANE STARTS SIGN 8-1x

For mandatory cycle lanes, warning signs should normally be placed in advance of the lane. For instances where a taper has been striped to start the lane, sign 8-1x should be placed. Where the speed limit is 35 kph or 50 kph, the sign should be sited 20 m in advance of the taper, with a minimum clear visibility distance of 45m. Where the speed limit is 65 kph, the sign should be sited 40m in advance of the taper with a minimum clear visibility distance of 60 m. Where siting of the sign is likely to be difficult and where the cycle lane is clearly visible to drivers, sign 8-1x may be omitted. However, in the interests of road safety, the sign should be provided wherever possible. It is not appropriate to use the sign at intermediate junctions along the cycle lane. Figure 11-2 illustrates a typical layout. The size of Sign 8-1x shall be 825mm x 800mm for speeds 50km and below. For speeds in excess of 50km, the size of the sign shall be 990mm x 960mm.

11.2.3

CYCLE LANE REGULATORY SIGN 8-2x

Sign 8-2x should be provided at the start of the continuous line denoting the edge of the cycle lane (i.e. immediately following a taper). This is a regulatory sign that prohibits motor vehicles from encroaching on the cycle lane. The sign should be provided after each road junction on the same side as the cycle lane, even if the Sign 8-2x side road is one way leading away from the major road. The sign should also be provided after a junction on the opposite side of the road if vehicles can turn right from it to join the flow of traffic alongside the cycle lane. No two signs should be more than 300m apart; it might be necessary, therefore, to provide additional signs between junctions. The size of Sign 8-2x shall be 825mm x 375mm for speeds 50km and below. For speeds in excess of 50km, the size of the sign shall be 990mm x 450mm.

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Figure 11-2: Typical Start of Cycle Lane Layout

TRAFFIC CONTROL DEVICES MA Where possible, traffic islands should be provided at the start and end of contra flow cycle lanes. Where a traffic island segregates traffic from the opposing cycle lane, the off side sign should be located on this island. The number of arrows pointing upwards on the left hand side of the sign should be varied to indicate the number of lanes available in that direction.

If possible, the cycle lane should be segregated from the major road at the junction by a traffic islan immediately after the junction in the major road will warn drivers of the presence of the contra flow lane. alternative route should be provided for cyclists wanting to turn right at the junction. Where the road layou traffic may turn only into the major road (e.g. the junction is not a crossroads), turn only arrow signs 322 “Except Cycles” plate as appropriate, should be provided opposite the side road.

Two sizes are prescribed for the sign; 825mmx475mm and 990mmx570mm. The smaller size will usually be adequate. The larger size might be more appropriate where there are more than two lanes for general traffic or where there is a particular conspicuity problem. Figure 96 shows a typical arrangement at the start of a contra flow cycle lane; this should be separated from opposing traffic by a traffic island in the centre of the road. The exit side of the road, used by all traffic, should be protected by a pair of “no entry” signs (Sign 304) as for ordinary one way roads. These should be 750mm in diameter. Sign 8-7x, with a diameter of 450mm, should be provided on the left hand side of the road at the entrance to the contra flow cycle lane. A second, smaller sign may be provided in a bollard on the traffic island.

11.2.8

MANDATORY CONTRA-FLOW CYCLE LANE REQULATORY SIGN 8-7x

Sign 8-7x should be provided on the right hand side of the road at the entrance to the contra flow cycle lane. The sign should be a diameter of 450mm; a second, smaller sign may be provided as well in a bollard if a traffic island is used to separate the c ycle lane from the opposing traffic at the entrance to the lane.

11.2.9

MANDATORY CONTRA-FLOW CYCLE LANE PLATE SIGN 8-8x

Figure 11-3: Typical Entry Arrangement to a One Way Street

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11.2.10 CYCLE LANE PEDESTRIAN WARNING SIGN 8-9x

Sign 8-9x warns pedestrians of the presence of a cycle lane; it should not be used as a substitute for drivers approaching the cycle lane from a side road.

The sign is normally used for contra flow lanes where cycles will be approaching from the opposite directi of traffic. The signs should be sited where a majority of pedestrians cross the carriageway. Where ped cross a general traffic lane, the sign, varied to LOOK LEFT with the symbols facing right, should be lo opposite side of the road, adjacent to the cycle lane. Signs may be located on a pedestrian refuge adjacen lane.

Two sizes are prescribed for Sign 8-9x. The larger size, with a 50mm “x” height, should normally be used sign, with a 40mm “x” height, may be more suitable where there are space constraints, such as on a pede The sign may also be used for cycle tracks.

11.2.11 ADVISORY CONTRA-FLOW CYCLE LANE REGULATORY SIGN

Figure 11-4: Typical Arrangement at the Start of a Contra Flow Cycle Lane

Where it is not practicable to provide a mandatory contra flow cycle lane (prohibiting other traffic from usi the carriageway reserved for cycles), an advisory contra flow lane might be considered. This is •

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Oncoming vehicles need occasionally to encroach into the cycle lane, for example to pass parked v opposite side or to pass c yclists travelling in the with flow direction, Occasional loading and unloading needs to be allowed for within the lane, or It is not possible to prohibit waiting in the lane at all times.


Figure 11-6: Contra Flow Mandatory Cycle Lanes Figure 11-5: With Flow Mandatory Cycle Lanes

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