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Traffic signs, signals, and road markings in Singapore

How Singapore groups traffic signs and how to respond to common regulatory, informative, directional, EMAS, road-marking, and traffic-signal cues.

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Primary source: https://sso.agc.gov.sg/SL/RTA1961-R33?ProvIds=Sc-

Regulatory traffic signs in Singapore

Singapore's Traffic Signs Rules divide regulatory signs into mandatory, priority, and prohibitory or restrictive signs. They tell road users about obligations, restrictions, and prohibitions. The Rules also classify warning signs, which alert road users to danger, and informative signs, which provide travel information (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 3 and Schedule). LTA's driving guide also shows warning, informative, directional, and EMAS signs with descriptions for motorists (OneMotoring, Driving Rules and Information).

Mandatory signs

Follow the direction shown by a mandatory sign. “Ahead only” and turn-only signs require vehicles to proceed only in the arrow's direction. A “turn left/right ahead” sign requires the indicated turn at the junction ahead. “Keep left/right” signs direct vehicles to keep to that side, while “pass either side” allows vehicles to pass on either side of the sign (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 1–5; OneMotoring, Driving Rules and Information).

Priority signs

Prohibitory and restrictive signs

Other restrictive signs shown in LTA's guide include speed limits and restrictions for goods vehicles, vehicles with three or more axles, motorcycles, bicycles, pedestrians, and vehicles carrying dangerous goods into tunnels. Check the symbol and any displayed condition to determine which road users are restricted (OneMotoring, Driving Rules and Information).

Informative and directional signs

Rule 3(c) classifies Part III signs as informative signs, intended to provide road users with information that may be useful while travelling. Rule 2 requires prescribed signs to conform to the Schedule’s size, colour, type and descriptions; Rule 5 permits arrows and other indications to be reversed or varied as circumstances require. The inventory below records the Schedule’s captions and variants. For image entries without prose captions, it distinguishes legends confirmed by visual review from placement or use that remains unspecified (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, rr. 2–5).

The current Schedule identifies these additional entries in its Part III series: diagrams 86(a)–(b) are advance directional signs and 86(c)–(d) are confirmatory signs. Their Schedule images show sample route legends and arrows: 86(a) points right for Mountbatten Rd to Katong Rd, left for Bedok Rd, and straight for the ECP; 86(b) points straight for AYE (ECP), right for CTE (Tiong Bahru Road), and left for Lower Delta Road; 86(c) points left for Jurong East St 11; and 86(d) points right for NTUC Pasir Ris Resort and “UOMC / Govt Chalets”. These are displayed examples, not current route guidance; the Schedule image does not expand “UOMC”. Diagram 86(e) is ROCHOR ROAD, KEEP LEFT; 86(f) is PUBLIC CAR PARK; 87 is NO THROUGH ROAD; 88 is NO THROUGH ROAD ON SIDE ROAD TO THE RIGHT/LEFT; 89 is ONE WAY STREET; and 90 is ONE WAY TRAFFIC. Diagram 91 is U-TURN and indicates that a facility where vehicles may make a U-turn lies ahead; diagram 92 is U-TURNING VEHICLES KEEP RIGHT; diagram 93 is DUAL CARRIAGEWAY AHEAD. Diagrams 94, 95 and 95A are SLOW, REDUCE SPEED NOW and YOUR SPEED signs; 96 is RED LIGHT CAMERA; 97 is KEEP LEFT UNLESS OVERTAKING; and 98 is END OF RESTRICTED ZONE. The Schedule shows expressway-start signs in diagrams 99 and 103, an expressway-end sign in 100, end signs in 101 and 104, and END OF EXPRESSWAY AHEAD in 102. Visual review distinguishes 99–100 as rounded panels with the abbreviated “Start/End of E way” legend, 101 as a rectangular “End of Expressway” panel, 102 as the same end legend with “500 m,” diagram 103 as an unbarred motorway pictogram and diagram 104 as the same pictogram crossed by a diagonal bar. These are the displayed designs; the Schedule provides no separate driver-response instruction for these entries. In its separate illustrations, LTA says to follow expressway rules at a start sign and to slow down and follow the speed limit at an end sign; it does not map those examples to numbered Schedule diagrams (OneMotoring, Driving Rules and Information). The Schedule labels diagrams 107(a)–(b) deleted (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 86(a)–(f), 87–104 and 107(a)–(b)).

The Schedule’s bus-facility series includes bus-stop signs (diagrams 116(a) and 116(aa)); the displayed 116(aa) design is a dimensioned plate with a bus pictogram above “BUS.” The series also includes a bus-terminus sign (116(b)), BUS ZONE markings reserving the box for an omnibus to pick up or set down passengers (116(c)), and markings for a bus give-way line, box and controlled area (116(d)); its layout labels the box at the bus-bay entrance and places a “Give Way To Buses Exiting” sign in the controlled area. It also lists RAIN SHELTER (117), CONCEALED EXIT AHEAD (118), EXCEPT SCHOOL BUSES (119), the weight-condition signs EXCEEDING 2,500 KG IN UNLADEN WEIGHT (120) and VEHICLES NOT EXCEEDING 2,500 KG IN UNLADEN WEIGHT (124), and supplementary plates in diagrams 121–123 showing SCHOOL ZONE FOR 400M, EXCEPT AUTHORISED VEHICLES and EXCEPT SBS BUSES respectively. The Schedule gives no additional prose describing those three plates’ placement or operation (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 116(a)–124). LTA’s Chapter 19 standard-detail sheet illustrates the same supplementary-sign legends and says supplementary signs used with prohibitory or restrictive signs indicate the section of road to which the restriction applies. It does not cross-reference those designs to Traffic Signs Rules diagram numbers, so the diagram-to-design match is based on the displayed legends (LTA, Standard Detail Road Elements, Chapter 19 Traffic Informatory Signs).

Pedestrian and cyclist facilities in the same series include PEDESTRIAN CROSSING (125(a)); a temporary pedestrian-route sign (126), whose arrow may point left or be reversed or double-headed for a rightward or two-way route; underpass and overpass location signs (127–128); pedestrian lights (129(a)); the green omnibus signal (129(b)); BICYCLE CROSSING (129(c)) and BICYCLE CROSSING SIGN (129(ca)), both indicating the crossing location; a temporary cyclist-route sign (129(d)), whose arrow may point left or be reversed or double-headed for a rightward or two-way route; and bicycle lights (129(e), captioned LIGHT SIGNALS FOR BICYCLES), whose illustration shows red and green bicycle aspects. These are the Schedule’s stated captions and descriptions; no additional driver response is inferred (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 125(a)–129(e)).

The Schedule captions diagrams 105 and 106 as EXPRESSWAY KILOMETRE SIGN entries. Their figures show circular signs: diagram 105 gives the sample destination “PIE” and distance “2 km”; diagram 106 shows a variable layout with destination and distance fields. These are displayed examples, and the Schedule gives no placement or driver-response instruction for them. The later diagrams 107(a) and 107(b) are specifically marked deleted (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 105–107).

The Schedule marks diagrams 108, 108A, 110 and 111 as deleted. It separately labels the current taxi-stand sign and its capacity variant as diagrams 108B and 108C, the taxi drop-off point as diagram 110A, and TAXI ADVISORY as diagram 111A (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 108–108C, 110–111A).

Across the intervening Part III series, the article’s statutory sign inventory also covers diagrams 112–129(e), 137–138(b), 148(a)–151(f), 160(a)–162, 164–165A(b), 166–177(b), and the newer ERP Charge Zone sign and marking variants. It distinguishes current Schedule entries from those expressly marked deleted, including 107(a)–(b), 108, 108A, 110–111, and 158–159. Visual review identifies 160(a)–(f) as wheel-clamp-zone notices with directional arrows, a $200 unclamping fee, and two time-plate variants; 161(a)–(b) permit conditional left or right turns on red, while 161(c)–(g) show pedestrian/main-road give-way, turning-vehicle warning, side-road traffic warning, stop-before-turning, and give-way-to-exiting-buses messages; 162 is an ERP-in-operation board with amber light and R symbols. Rule 11(k)(ix) supplies the conditional maneuver for 161(a)–(b). Schedule diagrams 130, 131, 133 and 134 display the pavement words SLOW, STOP, AHEAD and THUMP respectively; their specific placement and driver response are not independently stated. LTA’s examples—such as bus-only, taxi-only, turning/waiting-lane, parking, speed-detector, cycle-track and detour signs—are useful operational illustrations, but are not treated as statutory diagram-number identifications unless the sources explicitly map them (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(ix); OneMotoring, Driving Rules and Information).

Informative signs provide information to motorists. LTA's examples include bus- and taxi-only facilities, turning and waiting lanes, expressway starts and ends, red-light cameras, motorcycle rain shelters, parking (including parking reserved for lorries), bus stops, no-through roads, cycle tracks, speed detectors, and one-way street information. Read the sign and any vehicle or time condition shown. For example, signal and move to the correct lane at a turning-lanes sign; at a waiting-lanes sign, drivers may wait in any marked waiting lane and must stop for crossing pedestrians; at an expressway-start sign, follow expressway rules; at an expressway-end sign, slow down and follow the speed limit. LTA says a red-light-camera sign reminds drivers to stop when the signal changes to amber. The amber-light rule prohibits proceeding beyond the stop line, except when the vehicle is so close to the line when amber first appears that it cannot safely stop before it; the camera sign does not remove that exception (OneMotoring, Driving Rules and Information; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(ii)). A bus-stop sign warns against parking or stopping within 9 metres ahead of or behind the bus bay. A left-turn-lane sign may show a left-only lane beside a shared lane from which drivers can turn left or continue straight; a U-turn sign may specify a vehicle weight limit. A speed-detector sign prompts drivers to check their speed and stay within the limit. LTA also explains that its generic “Slow down” cue means to keep within the speed limit. The statutory Schedule separately lists signs named SLOW (diagram 94), REDUCE SPEED NOW (diagram 95), and an electronic YOUR SPEED sign (diagram 95A); the electronic sign displays the motorist's real-time speed to indicate whether to slow down to obey the limit. The Highway Code says to always obey the “Reduce Speed Now” sign (OneMotoring, Driving Rules and Information; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 94–95A; Singapore Statutes Online, Highway Code, para. 47). Travel-time displays show estimated times to selected expressway exits, while traffic-information displays report conditions ahead. A cycle-track sign directs cyclists to stay on the track, and LTA's “Keep to the left” information sign says the right lanes are for overtaking only (OneMotoring, Driving Rules and Information).

The Schedule depicts full-day bicycle-lane markings at diagrams 166–168(c): diagram 166 shows the lane markings, 167(a) places a full-day lane at a signalised intersection, 167(b) at a bus stop, and 168(a)–(c) at uncontrolled junctions or openings. Diagram 169 warns motorists that cyclists are likely in the road section ahead and says motorists should slow down. Its image shows a yellow “Cyclists AHEAD” panel with a white bicycle logo above a red “SLOW” panel; the drawing labels the upper panel 600 mm wide by 822 mm high and the lower panel 378 mm high. Diagrams 170(a)–(b) mark the start and end of a full-day bicycle lane. Their images show square white signs with a black bicycle logo, reading “LANE BEGINS” and “LANE ENDS” respectively; each is 600 mm wide by 900 mm high. Part-day lane entries include the cyclist-logo and Sunday 5 a.m.–11 a.m. time marking at diagram 171, a signalised-intersection layout at 172, bus-stop layouts at 173(a)–(b), an uncontrolled-junction/opening layout at 174, and start/end signs at 175(a)–(b). Their drawings show a white bicycle-logo sign reading “LANE BEGINS” or “LANE ENDS”, each 600 mm wide with an 822 mm-high main panel and a supplementary “Sunday 5am–11am” plate 429 mm high. Rule 8A prohibits parking on a full-day bicycle lane at any time and on a part-day bicycle lane on Sundays from 5 a.m. to 11 a.m. (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 166–175(b); Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, rr. 7 and 8A).

Other informative examples on LTA's guide state when traffic signals are not in operation during specified hours, warn that speed-regulating strips are ahead and advise slowing down, or direct drivers to slow down and stop for a visually impaired person crossing. LTA does not state how drivers should respond to the “Traffic signals not in operation during the stated hours” sign. The Highway Code separately says that at a junction with no traffic lights, give-way signs or stop signs, drivers must give way to all traffic on their right, including cyclists; this general rule does not establish where the hourly sign is used or whether other controls are present, so its sign-specific effect remains unresolved (OneMotoring, Driving Rules and Information; Singapore Statutes Online, Highway Code, para. 71). Parking-guidance signs give real-time information about available spaces. Tow-away and wheel-clamping zone signs warn that vehicles parked in those zones may be towed or clamped. No-through-road signs indicate that there is no through access in the direction shown; check any arrow, vehicle category, or time displayed on a sign (OneMotoring, Driving Rules and Information).

The statutory Schedule also depicts a PUBLIC CAR PARK sign and signs identifying taxi stops and stands. It includes a P2P STOP sign at diagram 107(e), described as indicating the location of a P2P stop; the diagram took effect on 1 January 2026. Two variants make taxi capacity explicit: diagrams 107(d) and 108C specify the number of taxis that may use a taxi stop or stand at one time. The TAXI ADVISORY sign informs passengers that taxi touting or overcharging is illegal, and QUEUE HERE FOR TAXI identifies where to queue (diagrams 111A and 112). The Schedule also separately labels PASSENGER PICK-UP POINT (diagram 109) and TAXI DROP-OFF POINT (diagram 110A), describing the latter as locating a taxi drop-off point (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 86(f), 107(c)–(e), 108B–108C, 109–112). The Road Traffic Rules define a P2P stop as a road area identified by that sign and marked with blue lines. They prohibit vehicles other than taxis and chauffeured private hire cars from stopping there, and prohibit parking any vehicle there. At a taxi stop, non-taxis may not stop and no vehicle may park; at a taxi stand, non-taxis may not stop or park (Singapore Statutes Online, Road Traffic Rules, r. 1A; Singapore Statutes Online, Road Traffic Rules, r. 24).

At selected signalised junctions where motorists turn right across the junction, LTA places a Give Way to Pedestrians sign above the traffic-light pole to remind drivers to look out for and give way to pedestrians (OneMotoring, Road Safety).

Directional signs help drivers find routes and exits and choose the correct lane. LTA describes advance and confirmatory directional signs as white text and arrows on green backgrounds; signs for roads leading to expressways are boxed on blue backgrounds. Additional road-information signs use black text on white backgrounds (OneMotoring, Driving Rules and Information). The statutory Schedule allows the backgrounds of the depicted advance and confirmatory signs to be green, blue, or white, with white or yellow lettering on coloured backgrounds and black lettering on white backgrounds; LTA's color descriptions are examples of sign types, not an exhaustive palette (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, note to diagrams 86(a)–(d)). Road-works, single-lane, and detour signs give advance route or lane guidance: slow down and look for obstructions at road works, slow down and merge where a single lane is indicated, and slow down and prepare to follow the detour. An arrow may show the detour direction (OneMotoring, Driving Rules and Information). The statutory Schedule distinguishes a ONE WAY STREET sign, which indicates that traffic ahead flows one way to the left or right, from a ONE WAY TRAFFIC sign, which indicates the direction of flow on a one-way street (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 89–90). For its illustrated one-way-traffic sign, LTA says drivers can turn right or left (OneMotoring, Driving Rules and Information). Other scheduled informative signs name a U-turn facility ahead, a keep-right cue for U-turning vehicles, a dual-carriageway-ahead sign, an end-of-restricted-zone sign, and expressway kilometre signs (diagrams 91–93, 98 and 105–106). The Schedule also includes bus-lane-camera signs (diagrams 176(a)–(b)) and parking-enforcement-camera signs (diagrams 177(a)–(b)). For bus-lane camera signs, diagrams 176(a) and 176(b) say vehicles may be driven or remain on a bus lane only when permitted; image review shows 176(a) also displays “Fine $130”, while 176(b) omits a fine panel. Parking-enforcement-camera signs 177(a) and 177(b) similarly say vehicles may be parked only when permitted; 177(a) displays “Fine up to $300 & 3 Demerit points”, while 177(b) has no penalty panel. Part III also includes END OF SCHOOL ZONE (diagram 164), END OF SILVER ZONE (diagram 165), and END OF FRIENDLY STREETS signs (diagrams 165A(a)–(b)). The Schedule says the school-zone sign marks the end of a demarcated School Zone and that its preceding road section is near a school; the Silver Zone sign marks its zone’s end and indicates elderly pedestrians were likely in the preceding section; the Friendly Streets signs mark the end of that demarcated zone. Visual review of diagrams 165A(a)–(b) shows the same blue-background, white-border and white-lettering legend on two square sign sizes: 900 mm × 900 mm for 165A(a) and 600 mm × 600 mm for 165A(b) (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 164, 165 and 165A(a)–(b)). This article does not infer more detailed driver instructions than the Schedule states (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 91–93, 98, 105–106, 111A–112 and 176(a)–177(b)).

LTA's examples of route displays include estimated travel times to selected expressway exits, traffic-condition information on expressways and major arterial roads, and additional road information about roads drivers are approaching. A sign showing a left-turn-only lane beside a shared left-turn-or-straight lane explains which movement each lane permits; a U-turn-ahead sign may show a vehicle weight limit. Electronic displays may use the abbreviations AFT (after), BEF (before), LN (lane), SH (shoulder), and VEH (vehicle) (OneMotoring, Driving Rules and Information). LTA's Standard Detail Chapter 18 separately illustrates lane-indication signs using white arrows, borders and lane markings on blue backgrounds; another sheet depicts “Cyclist Crossing Ahead” and “Congestion Expected Ahead” signs. These are LTA standard-detail examples, not Schedule diagram-number identifications, so they do not establish a statutory diagram-number mapping for those layouts, including diagrams 149(d)–(e) (LTA, Standard Detail: Traffic Informatory Signs).

EMAS signs

LTA's EMAS examples cover road conditions or works, congestion, accidents, breakdowns, speed limits, lane obstructions, events, and road closures. A “Slow down and drive carefully” warning can refer to road sweeping, tree pruning, plant watering, debris spillage, or missing lane markings. For an accident or breakdown, watch for stationary vehicles and motorists outside their vehicles. Do not exceed a displayed speed limit. If an obstruction is shown in a lane, slow down and prepare to change lanes if necessary. Event messages advise drivers to expect delays; for a road closure, follow the indicated exit or alternative exit. LTA also shows messages asking drivers to look out for and give way to an ambulance or fire engine. Its displayed message set includes “Left turn road closed ahead”; the guide supplies no additional response text for that particular display. In tunnels, a green arrow means the lane is open, a red cross means it is closed, and an amber cross indicates a possible obstruction ahead. These are examples from LTA's guide, not an exhaustive list of every variable message sign (OneMotoring, Driving Rules and Information).

Common road markings

Rule 7 defines several pedestrian and bicycle crossing layouts. A zebra crossing uses one of the Schedule layouts in diagrams 142(a)–144(b). Visual review of those six drawings confirms paired layouts showing either a flashing beacon or a pedestrian-crossing sign; diagrams 144(a)–(b) depict the crossing at a curved junction approach. The layouts also show approach zigzags and signs, but the drawings give no separate driver-response instruction. A zebra crossing may also be identified on either side by diagram 125(a) signs or a pair of amber beacons at least 300 mm in diameter, which may be intermittently or otherwise internally illuminated. A signalised pedestrian crossing uses two parallel continuous or broken white lines, each at least 200 mm wide and at least 3,000 mm apart, as shown in diagrams 140(a), 140(e) and 145. A non-signalised pedestrian crossing at a signal-controlled junction uses two parallel yellow lines, each at least 300 mm wide and spaced at least 3,000 mm centre-to-centre, as shown in diagram 140(e). A signalised bicycle crossing uses two parallel white lines, each at least 300 mm wide and spaced at least 3,000 mm centre-to-centre, running across the road, subway or bridge as shown in diagram 145(a) (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(4)–(7) and Schedule, diagrams 125(a), 140(a), 140(e), 142(a)–144(b), 145 and 145(a)).

Rule 7 sets general minimum widths of 100 mm for longitudinal road lines and 200 mm for transverse lines. It also identifies the statutory stop and give-way markings: diagram 153 is the single white line where vehicles stop when required by a STOP sign, signal or police direction; diagram 154’s broken double white lines mark where vehicles give way to traffic from the side specified by a GIVE WAY sign; diagram 155 marks a required give-way point. Continuous double white lines in diagram 150(a) mark a boundary that no vehicle may cross, whether overtaking or not. The road edge is marked by a continuous or broken white marginal line at least 300 mm wide (diagrams 139(b)–(c)); the expressway road shoulder is demarcated by a continuous white marginal line at least 300 mm wide (diagram 151(e)) (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(1)(a), (3), (10) and (12), and Schedule, diagrams 139(b)–(c), 150(a), 151(e), 153–155).

Road Traffic Rules r. 25 separately restricts stopping or parking on a road marked with perpendicular yellow lines for loading or unloading goods. The restriction applies Monday to Friday, except gazetted public holidays, from 7.30–9.30 a.m., 12.30–2 p.m. and 4–6 p.m.; on Saturdays, except gazetted public holidays, it applies from 7.30–9.30 a.m. and noon–2 p.m. This rule states those prohibited periods; it does not establish that stopping or parking is allowed at other times (Singapore Statutes Online, Road Traffic Rules, r. 25).

Road markings can show where to stop or give way, guide the path of traffic, mark crossings, or indicate parking and lane restrictions (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7). Rule 9 separately prohibits a vehicle from passing over a road divider (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 9). Rule 7 also allows markings to identify reserved places including bus stops, taxi stands and stops, P2P stops, bicycle and motor-cycle parks, car parks, loading and unloading bays, and parking for vehicles of persons with disabilities. The Rules say road lines, markings and other traffic devices must be painted or indicated by suitable material in white, blue, yellow or red. It specifies that a parking place or public service vehicle stand is indicated by broken or continuous lines in Schedule diagram 156, but does not give a complete illustrated layout for every reserved-use category (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(1)(d) and (13)). Taxi stands and taxi stops are identified by their prescribed signs together with yellow road lines; P2P stops use their prescribed sign and blue lines (Singapore Statutes Online, Road Traffic Rules, r. 1A). At a taxi stand, non-taxis may not stop or park; at a taxi stop, non-taxis may not stop and no vehicle may park; at a P2P stop, only taxis and chauffeured private hire cars may stop and no vehicle may park (Singapore Statutes Online, Road Traffic Rules, r. 24). LTA further says taxis may stop at taxi stops only briefly to pick up or drop off passengers, and may queue for passengers in designated taxi-stand lots (OneMotoring, Parking). For URA car parks, the URA says reserved handicap lots are larger to accommodate mobility aids and a vehicle with a handicap label may use them (URA, Common Offences). BCA's linked Code PDF is Version 1.1, with editorial amendments dated 1 March 2026. For building plans submitted to BCA on or after 1 November 2025, the 2025 Code on Accessibility applies to new building works and additions and alterations works. For accessible vehicle parking lots within that scope, the Code requires a centred Symbol of Access painted or marked on the lot: a white stylised figure 1,000–1,500 mm long on a blue background. It also requires an adjacent vertical sign bearing the symbol, at least 450 mm by 450 mm, positioned so a parked vehicle does not obscure it, and carrying a contact number for reporting unauthorised parking. Directional signs must guide drivers to the lots before the car-park entrance and at changes of direction inside the facility (BCA, Code on Accessibility in the Built Environment 2025, clauses 3.3.2 and 3.3.4; BCA, Revised Code to Enhance Singapore's Built Environment for an Inclusive Nation). LTA's March 2026 Revision I Chapter 8 drawing shows single and double yellow zigzag road-edge lines as separate markings (types O and P), and treats its type R raised-profile marking separately. The type R notes specify raised-profile marking from the start of the exit-road shoulder marking to 10 m behind the gore, from the start of the chevron to 10 m past the gore, at the start of an expressway deceleration lane beside the paved shoulder, and continuously along the expressway shoulder next to the slow lane (LTA, Standard Detail Road Elements, Chapter 8 Road Markings & Signs, Revision I). The drawing also includes lane-marking sheets, arrows, chevrons, turning-pocket guidance and intersection layouts. LTA's index identifies Revision J (September 2026) as taking effect on 1 March 2027 and states Revision I (March 2026) is the existing version until then; the Revision I Chapter 8 drawing was checked directly for the markings summarized here (LTA, Transport Infrastructure Specifications and Design Criteria). The March 2026 Revision I Chapter 8 drawing index does not list a dedicated public-road loading-bay layout; Rule 7 names loading and unloading bays as a reserved-use category without giving a complete illustrated layout for each such category (LTA, Standard Detail Road Elements, Chapter 8 Road Markings & Signs; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7). URA’s separate best-practice guide concerns loading bays within commercial buildings and supplements applicable agency codes and standards; it does not establish the road-marking layout for a public-road loading bay (URA, Commercial Development Parking and Loading Bay Guidance). LTA's guide explains several markings drivers commonly encounter:

Part III shows the pavement legends “SLOW” (130), “STOP” (131), “AHEAD” (133) and “THUMP” (134); diagrams 130 and 131 are scale drawings at 1:20, while 133 and 134 have no accompanying captions in the Schedule. LTA describes word markings generally as advance information about approaching facilities or traffic devices, giving “HUMP AHEAD” and “SLOW” as examples (LTA Word Marking dataset). Its standard details show SLOW, X-ING and AHEAD pavement messages on approaches to raised zebra crossings, and a typical “HUMP AHEAD” pavement warning for a road hump (LTA, Standard Detail Road Elements, Chapter 9 Traffic Markings & Miscellaneous). These examples do not map the standard-detail drawings to Schedule diagrams 130–134, and neither source states a separate response to the “STOP” or “THUMP” pavement legends. Placement and driver response for those specific statutory entries therefore remain unresolved. Part III also labels SPEED REGULATING STRIPS AHEAD (132), MARKINGS FOR A ROAD HUMP (135), TRAFFIC CALMING MARKINGS (135A), and START OF TUNNEL (136). The Schedule describes diagram 135A as two rows of white triangles intended to visually narrow the lane and slow motorists. Diagrams 139(a)–(c) show edge-of-road markings. The Schedule labels 140(a) and 140(e) MARKINGS AT SIGNAL-CONTROLLED JUNCTION; 140(b) is a yellow box at a junction, 140(c) near a bus bay, 140(d) at the exit of a slip road, 140(f) near a U-turn opening, 140(g) near a demarcated bus bay, 140(h) near a driveway, and 140(i) near a bay. Diagram 140(e) also contains the Schedule's signalised and non-signalised pedestrian-crossing line layouts described under Rule 7. A right-turn-pocket marking guides the driver's path through a turn (141); diagram 146 shows U-turn markings; 147 shows double lines and hatched markings on sharp bends; and 147A marks Broader Alignment Lane Markings used on bends on expressways and major arterial roads (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 130–147A).

The next Schedule group labels diagrams 148(a)–(c) DIVERGING TRAFFIC, MERGING TRAFFIC and TWO WAY TRAFFIC CHEVRON MARKINGS. Diagrams 149(a)–(c) are labelled ACCELARATION LANE SINGLE ENTRY [sic], DECELARATION LANE SINGLE ENTRY [sic] and CHEVRON MARKINGS FOR EXPRESSWAY. The images for 149(d) and 149(e) show speed-change-lane markings; 149(e) also depicts an exit and labels a 300–500 m distance. LTA’s currently effective Revision I standard includes typical expressway acceleration-lane layouts for entry ramps and deceleration-lane layouts for exit ramps (LTA, Transport Infrastructure Specifications and Design Criteria; LTA, Standard Detail Road Elements, Chapter 8 Road Markings & Signs, Revision I). Comparing the drawings, 149(d) appears to correspond to the entry-ramp layout and 149(e) to the exit-ramp layout; this is a visual inference because LTA does not map the standard-detail drawing numbers to the Schedule diagrams. Diagram 149(f) is an INCLINED BROKEN YELLOW LINE that guides drivers emerging from a side road away from a leftmost bus lane and gives advance warning of that bus lane. Diagrams 150(a)–(d) distinguish double white lines at the centre of a two-way road or between lanes, a single white centre line on a two-way road, broken white centre lines on a two-way road, and broken white lines between lanes. Diagram 151(a) shows broken white lines between lanes approaching a junction stop line; 151(b) marks the edge of the main road at bus bays and lay-bys, slip roads (including acceleration and deceleration lanes), and exclusive right-turn lanes; 151(c) marks the edge of an undivided straight road; 151(d) is a single white line at the edge where there is imminent hazard; 151(e) demarcates an expressway hard shoulder and its drawing specifies a 300 mm line; and 151(f) is a 200 mm edgeline used alongside a carriageway edge or dual-carriageway central kerb on selected roads as supplementary guidance. Rule 7 independently identifies double white lines in 150(a) as a boundary vehicles must not cross, and requires at least 300 mm continuous or broken white marginal lines for the road edge and a 300 mm continuous white line demarcating the expressway shoulder (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 148(a)–151(f); Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(10) and (12)).

The Schedule distinguishes lane-use arrows from general route guidance. Lane-indication arrows can carry time restrictions (diagram 137); merge arrows indicate that two lanes join one ahead (diagram 138a); and a shared arrow permits traffic in its lane to proceed straight, turn left, or turn right (diagram 138b). These arrow meanings and the turn-pocket cue above are the descriptions given in Part III (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 137–138(b) and 141).

  • A single white stop line marks where to stop and check the traffic situation ahead before moving off. At parallel broken white give-way lines, slow down and stop to give way to traffic on the major road (OneMotoring, Driving Rules and Information).
  • A white zigzag crossing marking means no parking, waiting, or stopping on the road. A broken white line on a two-way road tells vehicles to keep to its left. A continuous white line means vehicles must keep to its left and parking is prohibited on either side of the road at all times. Double unbroken white lines may not be crossed (OneMotoring, Driving Rules and Information; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(12)).
  • Single yellow lines prohibit parking on that side from 7 am to 7 pm, except on Sundays and public holidays; double yellow lines prohibit parking at all times, with immediate pick-up and drop-off as the stated exception. A single yellow zigzag prohibits parking at all times except for immediate pick-up and drop-off; a double yellow zigzag prohibits parking and stopping at all times. LTA says the yellow zigzag restrictions also cover the public footpath adjacent to the road (OneMotoring, Driving Rules and Information; OneMotoring, Parking).
  • The Rules give these zigzag zones formal demerit-point names: a single yellow zigzag and its adjacent public footpath form a Demerit Points No Parking Zone, where parking is prohibited; a double yellow zigzag and its adjacent public footpath form a Demerit Points No Stopping Zone, where stopping is prohibited (Singapore Statutes Online, Road Traffic Rules, r. 1A; r. 24A; r. 24B).
  • A white zigzag marks the approach to a zebra crossing and prohibits parking, waiting or stopping there. It is distinct from the yellow zigzags that indicate parking or stopping restrictions. For crossing priority and driver duties at pedestrian crossings, see the warning-sign discussion above and follow the crossing controls (OneMotoring, Driving Rules and Information).
  • At zebra crossings, side zigzag markings lead up to the crossing; triangular Pedestrian Crossing Ahead markings alert drivers to a crossing that may not be visible from far away, such as around a bend. Raised zebra crossings also act as humps to slow traffic (OneMotoring, Road Safety).
  • At most pedestrian crossings, LTA says dashed lines have replaced the former continuous straight crossing lines. The dashed crossing makes the pedestrian crossing stand out against the continuous stop line for vehicles (OneMotoring, Road Safety).
  • At zebra crossings, LOOK pavement markings remind pedestrians—especially children and older people—to check for oncoming traffic before crossing. LTA says the letter O shapes resemble eyes and complement the kerb drill taught in primary schools (OneMotoring, Road Safety).
  • At selected signalised pedestrian crossings, embedded lighted road studs flash amber when the green man is on, warning approaching motorists. LTA says they are used at selected junctions where right-turning motorists often fail to give way to pedestrians; this is a separate feature from the steady amber LED studs at selected zebra crossings described in the warning-sign article (OneMotoring, Road Safety; warning-traffic-signs).
  • In Enhanced School Zones, prominent “Slow” and “School” road markings and red road-surface treatment near school gates are among the features LTA identifies. Since 1 January 2026, the lower speed limits in Enhanced School Zones apply throughout the day, so follow the posted limit rather than assuming it applies only at school arrival or dismissal times. In Silver Zones, large “30” or “40” pavement markings remind drivers to follow the posted speed limit; the gateway yellow rumble strips and signs mark entry (OneMotoring, Road Safety).
  • White triangular traffic-calming markings provide a visual alert to slow down. Raised white profile thermoplastic markings, often at expressway exits, vibrate when driven over and alert drivers who drift from the centre of the road (OneMotoring, Road Safety).
  • At expressway bus stops, the red surface and vibralines in an Enhanced Chevron Zone alert motorists not to drive near the bus stop (OneMotoring, Road Safety).
  • Right-turning pockets are painted at signalised junctions to guide right-turning vehicles across the junction and prevent them from crossing the path of oncoming traffic (OneMotoring, Road Safety).

The Schedule’s diagrams 152(a)–(d) show the single and double yellow edge lines and zigzags described above. Diagram 152(e) adds a distinct parking prohibition: red transverse lines at least 1,000 mm wide are laid perpendicular to the road edge, and the no-parking section runs from the first such line to the point where the lines end. Road Traffic Rules r. 22(k) also prohibits parking along that marked section (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 152(a)–(e); Singapore Statutes Online, Road Traffic Rules, r. 22(k); see also parking-rules-and-payment).

Bus-lane markings

The current Traffic Signs Rules Schedule contains part-day bus lanes, full-day bus lanes, and bus-only lanes. The live OneMotoring Driving Rules and Information page is internally inconsistent: its overview says there are two types, while its detailed Bus Lanes table lists all three, including bus-only lanes (checked 13 October 2026). Schedule diagram 113 marks the start of a part-day or full-day bus lane. The displayed sign legends state the hours: diagram 114 says BUS LANE — Mon–Fri, 7.30am–9.30am and 5.00pm–8.00pm, except public holidays; diagram 114A says BUS LANE — Mon–Sat, 7.30am–11pm, except public holidays; and diagram 114B says BUS-ONLY LANE. Rule 8 prohibits non-omnibus vehicles from driving or remaining on a bus-only lane at any time, subject to its stated exceptions. Rule 7’s diagram 115 variants show part-day lane markings (115(b)–(d)), a part-day layout at a signalised intersection (115(a)), full-day layouts at a signalised intersection and uncontrolled junctions or openings (115(e)–(h)), and bus-only-lane markings (115(i)–(l)). The bus-only markings are continuous red longitudinal lines at least 300 mm wide and transverse red lines at least 200 mm wide and 1,200 mm long; the bus-only-lane provisions took effect on 20 April 2026. For the separate legal operating hours, exceptions, and approach to a Bus Priority Box, see bus-lanes-and-bus-priority-box (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, rr. 7 and 8 and Schedule, diagrams 113–115(l); Road Traffic (Traffic Signs) (Amendment No. 2) Rules 2026, rr. 1–3 and 5; OneMotoring, Driving Rules and Information).

ERP 2 charging-location cues

The current Traffic Signs Rules provide for ERP Charge Zones to be indicated by one or more listed signs (diagrams 163(a)–(d)), lane markings (diagrams 163A(a)–(b) or 163B), or specified blue road-surface treatments. Rule 7(16)(d) describes a 25-metre road area with a continuous blue line at the road edge, white “ERP” lettering in each lane, and broken blue lines between lanes; Rule 7(16)(c) separately allows a 25-metre blue area across the road, optionally with white “ERP” letters in each lane. The 2026 amendment effective 15 May updated the ERP Charge Zone signs and markings, and added diagram 163B for a marking usable on arterial roads or expressways. The schedule describes all four signs, diagrams 163(a)–(d), as being placed at the start of a zone to indicate that vehicles are entering it; diagrams 163(c) and 163(d) are not described as advance-warning signs (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7(16) and Schedule, diagrams 163(a)–(d), 163A(a)–(b) and 163B; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule; Road Traffic (Traffic Signs) (Amendment No. 3) Rules 2026, rr. 1–3).

LTA says the new markings and signs are being introduced progressively from October 2026 at the existing 33 operational ERP locations, with works scheduled to finish before ERP 2 begins on 1 January 2027. The rollout uses two oval blue “ERP” symbols per lane on arterial and slip roads, three per lane on expressways, and an “ERP Charge Zone” sign at the start of each charging location. The cues complement OBU notifications, which alert drivers before entry, give the prevailing charge, and indicate the amount charged when passing a location. Gantry frames may be retained and repurposed with roadside units at some sites; LTA expects modification or removal of all 95 gantries (62 non-operational and 33 operational) to be completed by June 2027 (LTA, New Road Markings and Signs to Support Transition to ERP 2 from October 2026).

The Schedule labels diagram 156 TYPICAL ARRANGEMENT OF PARKING LOTS and says the sign in diagram 157 indicates a parking lot reserved for a vehicle driven by a disabled person. Diagrams 158 and 159 are marked deleted. The Schedule’s parking-lot arrangement is distinct from the more detailed accessibility specifications for building work (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 156–159).

The Schedule contains image entries for diagrams 160(a)–(f), 161(a)–(g) and 162 without separate prose captions. Visual review identifies 160(a)–(f) as wheel-clamp-zone notices with direction arrows, an unclamping-fee legend and time-plate variants; 161(a)–(b) are left- and right-turn-on-red signs, while 161(c)–(g) depict pedestrian and traffic-control situations; and 162 is an ERP-in-operation board. Rule 11(k)(ix) states that signs 161(a) and 161(b) permit a left or right turn on red only after stopping, with caution and due regard for pedestrians and traffic in other directions. The Schedule image and rule together establish these signs’ displayed and operating information; no further response is inferred (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagrams 160(a)–162; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(ix)).

Yellow-box junction rules are covered in yellow-box-junctions; bus-lane markings and operating rules are covered in bus-lanes-and-bus-priority-box. For accessible vehicle parking in new building works and additions and alterations works covered by the BCA Code effective 1 November 2025, the Code specifies the lot symbol and adjacent signage described above. Rule 7 identifies additional reserved-use markings, but this article does not provide a complete illustrated catalog of the exact layouts for loading bays or other special-use markings. The public LTA standard detail drawing checked here does not include a loading-bay layout; it is not evidence that no other LTA standard or project-specific drawing exists. This article does not infer legal meanings from appearance alone (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 7; OneMotoring, Driving Rules and Information; LTA, Standard Detail Road Elements, Chapter 8 Road Markings & Signs).

Ordinary traffic lights

SPF’s Basic Theory of Driving handbook explains that a red light means stop. During an all-red phase, all approaches show red; wait until the green light facing your approach appears before moving. An amber light means stop unless you are so close to the stop line that you cannot stop safely. For a flashing amber light, the handbook says the signals are out of order and directs drivers to proceed with caution and give way to traffic on the right. A green light permits you to proceed, but check left and right to make sure it is safe (SPF, Basic Theory of Driving handbook, p. 44, updated 2 January 2026). The Rules formally state that intermittent red and amber lights flashing at 60–80 times per minute require a stop before proceeding cautiously for red, and slowing down before proceeding cautiously for amber; both instructions require regard for other road users and precedence to pedestrians, and the red rule also mentions traffic in other directions (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(vii)–(viii)). The Rules' signal instructions govern the legal response; the handbook gives the practical right-side give-way reminder for a flashing amber light.

A three-colour vehicle signal may be supplemented by miniature signal lights; the Rules give these the same meanings as the vertically arranged red, amber, and green three-colour system (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 14). A separate additional green light showing the letter B permits a bus in the innermost left lane to proceed straight despite the red light, provided another vehicle does not obstruct its path (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(vi)).

The Rules also recognize a two-colour vehicle signal made up of red and green lights, which must not be illuminated at the same time. They limit this system to temporary installations (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 12).

Red-amber-green turn arrows

LTA says red-amber-green (RAG) arrows control right-turn movements at signalised junctions. Stop behind the STOP line and wait for the green arrow before turning; LTA shows both overhead horizontal and roadside vertical arrow displays (OneMotoring, Driving Rules and Information). Under Rule 11, an illuminated additional green arrow allows vehicles to proceed in the arrow's direction even if the main signal is red or amber, with precedence to pedestrians. An intermittent green arrow flashing at 60–80 times per minute prohibits vehicles from proceeding beyond the stop line, except when a vehicle is too close to stop safely when the arrow first flashes (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(v)(A)–(B)). SPF's handbook describes the flickering green arrow as a warning that the signal is about to be cancelled and says not to proceed if the vehicle has not crossed the stop line (SPF, Basic Theory of Driving handbook, p. 44).

The handbook describes advanced warning lights as a pair of flashing amber lights with a “Light Signals Ahead” warning sign and a blue “Prepare to Stop” sign, placed before bends where the traffic light ahead is difficult to see. LTA describes them as being placed before signalised junctions or pedestrian crossings that motorists cannot see from afar, and says they flash when the signal ahead is amber or red. Drivers should slow down and be prepared to stop (SPF, Basic Theory of Driving handbook, p. 45; OneMotoring, Road Safety).

Turning left on red

A red signal normally closes a controlled junction to a left turn. Turn left on red only at a junction where a sign, line, or notice specifically permits it. Where the appropriate sign is displayed, first stop at the stop line; proceed beyond it only with caution and due regard for pedestrians and traffic in the stream you are entering (Singapore Statutes Online, Road Traffic Rules, r. 9; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(ix) and Schedule, diagrams 161(a)–(b)).

Lane-use and crossing signals

Overhead lane-use signals apply to the lane directly below each signal: a green downward arrow means vehicles may proceed along that lane; intermittent flashing amber crossed bars mean they may proceed with caution; a red crossed-bars signal means they must not proceed beyond the signal along that lane (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 13). These are lane-control displays and have a different meaning from the flashing amber light at an ordinary junction.

At pedestrian crossings, Rule 15 says a red standing-man light means pedestrians, PMD riders, and cyclists must not cross; a green walking-man light means they may cross. A flashing green man means the red-man light is about to illuminate (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 15). LTA’s standard drawing for pedestrian crossing signals spells out the practical cue: “DO NOT START TO CROSS” when the green man is flashing (LTA, Standard Detail: Traffic Informatory Signs, Sheet 15). At bicycle crossings, Rule 16 uses a red or green bicycle symbol: red means the listed users must not cross, and green means they may cross. A flashing green bicycle symbol means the red bicycle signal is about to illuminate (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 16).

Directions from officials controlling traffic

When a uniformed police officer, LTA employee, or security officer is engaged in regulating traffic, drivers must follow directions to stop or to proceed in or keep to a particular line of traffic; pedestrians must follow directions given to them. At a signal-controlled location, drivers must follow directions from a uniformed police officer or security officer even when the traffic lights indicate otherwise. The Highway Code likewise states that police officers’ traffic directions take precedence over signs, lights, road markings, and traffic regulations (Singapore Statutes Online, Road Traffic Act 1961, s. 120(1)–(2); Singapore Statutes Online, Highway Code, para. 115).

Signalling a driving intention

The Road Traffic Rules require a driver intending to stop, slow down, or change direction to the right or left to signal with an approved direction indicator, early enough for traffic to take appropriate action to avoid danger. The Highway Code also says to give a clear, timely signal before turning or moving right or left, stopping or slowing, pulling out from a parking place, or pulling out to pass (Singapore Statutes Online, Road Traffic Rules, r. 2; Singapore Statutes Online, Highway Code, para. 116).

Coverage debt

LTA’s current GIS Data Collection Specification separately describes its type A2 speed-change-lane marking as a white broken line, 1 m long with 1 m intervals and 200 mm width, used at carriageway edges next to auxiliary lanes such as expressway acceleration and deceleration lanes. LTA does not cross-reference type A2 to Schedule diagrams 149(d)–(e), so this standard detail does not resolve the numbered-diagram mapping. The same specification describes type A3 as broken yellow lines, 1 m long with 1 m intervals and 300 mm width, used to guide drivers emerging from a side road away from a normal bus lane; this resembles diagram 149(f)’s stated use, but the specification does not assign A3 to that diagram. It also says road humps have distinctive diagonal alternate black-and-yellow strips and are usually preceded, in the direction of traffic flow, by a separately recorded “HUMP AHEAD” marking (LTA, GIS Data Collection Specification v3.3, types A2–A3 and road-hump marking).

The Schedule diagram 135 road-hump layout depicts the pavement legends BUMP, AHEAD and HUMP, and yellow strips at the hump; the diagram does not state exact placement distances or a driver response (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, diagram 135).

The mandatory, priority, restrictive, warning and signal sections summarize selected driver-facing examples. The informative and directional section inventories all active Part III Schedule diagrams and variants reviewed in this audit, and identifies deleted entries separately. Where the Schedule gives only an image or omits placement or response, the article records that limit rather than inferring a rule. LTA examples can change with road conditions; follow the sign currently displayed (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, Part III). Schedule diagrams 121–123 show supplementary legends “School Zone For 400m”, “Except Authorised Vehicles” and “Except SBS Buses”, respectively; diagrams 120 and 124 are the weight-condition signs. LTA’s standard-detail sheet explains that these supplementary signs are used with other signs to indicate the extent of the restrictions they convey, but does not map its drawings to statutory diagram numbers. Diagrams 130–131 depict the pavement legends “SLOW” and “STOP” as scale drawings, and diagrams 133–134 depict “AHEAD” and “THUMP”. LTA says word markings generally give advance information; its standard details show SLOW/X-ING/AHEAD on approaches to raised zebra crossings and a HUMP AHEAD road-hump warning. These drawings do not map to statutory diagram numbers; specific placement and driver response for STOP and THUMP remain unresolved (LTA Word Marking dataset; LTA, Standard Detail Road Elements, Chapter 9 Traffic Markings & Miscellaneous). The Schedule images for 149(d)–(e) show speed-change-lane markings; 149(e) also depicts an exit layout and labels a 300–500 m distance. LTA's active Revision I Chapter 8 standard separately includes typical acceleration-lane drawings for expressway entry ramps and deceleration-lane drawings for exit ramps. Visual comparison suggests 149(d) corresponds to the entry-ramp layout and 149(e) to the exit-ramp layout, but this remains an inference because LTA does not cross-reference its drawing numbers to Schedule diagrams (LTA, Transport Infrastructure Specifications and Design Criteria; LTA, Standard Detail Road Elements, Chapter 8 Road Markings & Signs, Revision I). The same LTA sheet depicts chevrons at expressway entrances and exits, where traffic streams merge or divide, and in advance of a median island; it does not identify those examples as Schedule diagrams 149(d)–(e). Diagrams 160(a)–(f) show a “Wheel Clamp Zone” notice with arrows indicating the relevant direction, “Unclamping Fee: $200”, with variants showing 7am–10:30pm or 7am–7pm, and arrows pointing right, left, or both ways. Diagrams 161(a)–(b) display “Left Turn On Red” and “Right Turn On Red”. Under Rule 11(k)(ix), a vehicle in a lane from which the indicated turn is permitted by a Schedule sign or marking, and which has stopped at the stop line in compliance with the red light, may proceed cautiously beyond the line to make that turn, giving due regard to other road users and precedence to pedestrians and traffic in other directions. Diagram 161(c) reads “STOP and GIVE WAY To Pedestrians And Main Road Traffic”; 161(d), “Beware Of Turning Vehicles”; 161(e), “Watch Out For Traffic From Side Road”; 161(f), “STOP Before turning”; and 161(g) depicts a bus and lane arrows above “Give Way to Buses Exiting”. Diagram 162 is an “ERP IN OPERATION” board with an amber light and “R” symbols. The Schedule captions do not state additional driver response for 149(d)–(e), 160–162 beyond the text of Rule 11(k)(ix) for 161(a)–(b) (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, Part III; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, r. 11(k)(ix)). The signal guide summarizes ordinary vehicle, arrow, temporary, lane-use, pedestrian and bicycle signal systems. The current consolidated Rules list “restricted zone light signals” in Rule 10(d), but contain no current rule giving their arrangement, hours, or driver response; the former Rule 14 on those signals was repealed and current Rule 14 concerns miniature signals (Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, rr. 10 and 14; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules (1999 Revised Edition), former r. 14; Singapore Statutes Online, Road Traffic (Traffic Signs) Rules (1999 Revised Edition), current-at-that-edition r. 14). Although the 1990 Revised Edition prescribed two amber lights and two blue lights during specified periods, and amber-only lights during other periods, that historical schedule does not establish current signals or driver response. No current official operational source was found in this review, so those details remain unresolved. Common warning signs are covered in warning-traffic-signs, which has been checked against current statutory Schedule Part II diagrams 41–85 (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule). Diagram 75 is labeled “Restricted Zone Ahead” but marked “[Omitted]”; the Schedule gives no further description (Singapore Statutes Online, Road Traffic (Traffic Signs) Rules, Schedule, Diagram 75).

Sources