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Knowledge base Road rules 13 min read

Bus lanes and Bus Priority Boxes in Singapore

Singapore’s bus lane operating hours and exceptions, AI-assisted offence review, Bus Priority Box give-way rule, and published penalty information.

bus-lane Bus Priority Box give-way LTA

Primary source: https://sso.agc.gov.sg/SL/RTA1961-R33

Bus lanes and Bus Priority Boxes in Singapore

Singapore has part-day bus lanes, full-day bus lanes, and bus-only lanes. LTA publishes the applicable hours below (OneMotoring, Driving Rules and Information).

LTA's detailed Driving Rules page identifies part-day, full-day and bus-only lanes (OneMotoring, Driving Rules and Information).

Bus lane type Operating hours
Part-day Monday to Friday, 7:30–9:30 am and 5–8 pm; no operating hours on Saturdays, Sundays, or public holidays.
Full-day Monday to Saturday, 7:30 am–11 pm; no operating hours on Sundays or public holidays.
Bus-only All days and all times.

The current Traffic Signs Rules prohibit vehicles other than omnibuses from driving or remaining on part-day lanes during their operating hours, full-day lanes during their operating hours, and bus-only lanes at all times. The road markings distinguish the lane types: part-day lanes have a continuous yellow line and transverse yellow lines; full-day lanes add a parallel continuous red line to those yellow markings; bus-only lanes have continuous and transverse red lines. The Rules specify minimum dimensions: part-day lane longitudinal yellow lines are at least 300 mm wide and transverse lines at least 200 mm wide and 1,200 mm long; full-day lanes add a red line at least 150 mm wide alongside the yellow line at least 300 mm wide and use the same transverse yellow dimensions; bus-only lanes use a longitudinal red line at least 300 mm wide and transverse red lines at least 200 mm wide and 1,200 mm long. The bus-only lane type and all-times restriction took effect on 20 April 2026 (Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, rr. 7(11), 7(11A), 7(11AA) and 8; Singapore Statutes Online, Road Traffic (Traffic Signs) (Amendment No. 2) Rules 2026).

LTA’s driver guidance lists single-file cyclists, emergency-service or police vehicles on urgent duty calls, and public or non-scheduled buses among the exceptions. It says non-scheduled buses may use the lane but must not stop to pick up or drop off passengers, and drivers may cross a dotted bus-lane section to turn (OneMotoring, Driving Rules and Information; LTA, Bus Priority Schemes). The LTA list is a summary: under rule 8(2)(b), a cyclist is exempt only when not cycling alongside, on their left, another bicycle, three-wheeled pedal cycle, recumbent device, or power-assisted bicycle. For the emergency vehicles covered by rule 8(2)(a), the Rules require the approach to be made known by a distinctive siren, bell, or multi-toned horn. The Rules also exempt qualifying school, private-hire, and excursion buses operating under a Supplementary Public Transport Scheme, and permit other buses to use the lane subject to a restriction on stopping except to negotiate traffic. A driver may use a bus lane only as long as necessary to avoid danger or a collision. Additional bus-only lane exceptions cover specified Authority, street-works, and public-agency work vehicles, and vehicles authorised by a bus interchange, park, terminal, or depot licensee to use a lane leading into or out of that facility (Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, rr. 8(2) and 8(2A)).

OneMotoring states that violating the part-day and full-day bus-lane rules attracts a fine, and its page lists the bus-only lane and its all-times restriction. The statute prohibits unauthorised use of all three lane types. This article does not invent a composition amount (OneMotoring, Driving Rules and Information; Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules).

AI-supported bus-lane enforcement

In a written reply dated 6 October 2026, the Ministry of Transport said that an AI system had been trialled to detect bus-lane encroachments, among other uses. For bus lanes, the trial analysed over 800 hours of bus-camera footage over three months, capturing more than 450 encroachments. The AI correctly detected 415 cases, which the reply described as about 90% of encroachments; it also detected 257 cases that were false positives. These are trial figures (MOT, AI-Detected Bus Lane Offence Accuracy Assessment, Officer Review Requirements and Motorist Appeal Process).

LTA said it would continue refining the tools to reduce false positives. For now, bus-lane violations detected by the AI system are manually reviewed before enforcement action. Motorists may contest or appeal a notice, and human officers assess those appeals. LTA said it plans to expand bus-camera and AI use across more public bus services as the technology matures and accuracy improves (MOT, AI-Detected Bus Lane Offence Accuracy Assessment, Officer Review Requirements and Motorist Appeal Process).

Bus Priority Box

A Bus Priority Box, also known on OneMotoring as a Mandatory Give-Way to Buses area and in the Road Traffic Rules as a Bus Give-Way Box, helps buses exit a bus bay with less delay. White road markings showing the word “Bus” and a triangle warn that the box is ahead. Slow down at the first Give Way Triangle, watch for buses leaving the bus stop, stop before the Give Way lines, and give way to buses entering or waiting to enter the yellow box. Do not stay in the box (OneMotoring, Driving Rules and Information; LTA, Bus Priority Schemes).

The statutory rule applies when a bus is entering the box from a bus stop or bay, or when a bus at the stop or bay has stopped before the box and signals that it intends to enter. In either case, a driver or rider approaching the box within the marked Bus Give-Way Controlled Area must stop before the Bus Give-Way Line and give way. Separately, it is an offence to drive or ride in, or leave a vehicle in, the box so as to obstruct a bus entering or about to enter from a bus stop or bay (Singapore Statutes Online, current Road Traffic Rules, r. 26A; Singapore Statutes Online, current Traffic Signs Rules, r. 7(14)–(15)).

The mandatory stop and give-way duty is tied to a bus entering or signalling its intention to enter; the separate box obstruction offence is tied to obstructing a bus entering or about to enter. Those are the situations stated in rule 26A. If traffic is queued and the box cannot be cleared without stopping on it, wait before the Bus Give-Way Line rather than entering and blocking the box. This keeps the marked approach clear and avoids obstructing an entering bus under rule 26A (Singapore Statutes Online, current Road Traffic Rules, r. 26A).

Rule 26A does not state a separate penalty. For an offence under section 131 for contravening rule 26A, Road Traffic Act section 131(2) provides a court penalty, where no special penalty applies, of up to $1,000 or 3 months' imprisonment, or both for a first offence; for a second or subsequent offence, up to $2,000 or 6 months' imprisonment, or both. The Act lists this rule 26A offence in Part 2 of its Third Schedule (Singapore Statutes Online, Road Traffic Act 1961, s. 131(2) and Third Schedule, Part 2; Singapore Statutes Online, current Road Traffic Rules, r. 26A). These are court penalty ceilings; the actual Bus Priority Box composition amount is not established by the official sources cited here.

Announced temporary lane changes

LTA announced a temporary traffic reconfiguration along Ang Mo Kio Avenue 3 from 14 November 2026 until May 2028. The eastbound carriageway between the AMK Hub pick-up/drop-off point and the junction with Ang Mo Kio Avenue 8 will become a bus-only lane; the westbound carriageway will reduce from three lanes to two. Non-omnibus vehicles must not drive or remain on a bus-only lane at any time under rule 8(1B). Motorists should expect longer peak-period queues entering AMK Hub, with approximately 10 to 15 minutes of additional travel time. LTA says alternative routes will be available and traffic measures will include VMS, OBU notifications, advance directional signs, and traffic wardens; it advises motorists to plan ahead and follow signs and directions in the affected area (LTA, Temporary Traffic Reconfiguration Along Ang Mo Kio Avenue 3; Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, r. 8).

Coverage debt

Court penalty and published composition details

Rule 8 does not set out a separate penalty. Under Road Traffic Act section 131(2), where no special penalty is provided, the default court penalty is a fine of up to $1,000, imprisonment for up to 3 months, or both for a first offence; for a second or subsequent offence it is a fine of up to $2,000, imprisonment for up to 6 months, or both (Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, r. 8; Singapore Statutes Online, Road Traffic Act 1961, s. 131(2)). These are court penalty ceilings, not the composition sum offered for an offence.

Composition ceiling and demerit points

The Road Traffic Act identifies failure to comply with a traffic sign under section 120(3) and rule 8 as an offence under section 120(4). The current Road Traffic (Composition of Offences) Rules list section 120(4) as compoundable. The Act caps a composition offer at the lower of half the maximum court fine or $5,000. With the default section 131(2) fine ceilings, that means no more than $500 for a first offence or $1,000 for a second or subsequent offence; these are legal ceilings, not the actual composition sum LTA may offer (Singapore Statutes Online, Road Traffic Act 1961, ss. 120(4), 135(1), and Third Schedule, Part 2; Singapore Statutes Online, Road Traffic Act 1961, s. 131(2); Singapore Statutes Online, current Road Traffic (Traffic Signs) Rules, r. 8; Singapore Statutes Online, current Road Traffic (Composition of Offences) Rules, r. 2). LTA’s public offences page lists “driving in the bus lane during operating hours” but does not give a specific composition amount (LTA, Offences & Fines).

The DIPS Rules award points only for offences listed in their Schedule. The current Schedule does not list the bus-lane offence under Road Traffic Act section 120(4) read with Traffic Signs Rule 8. Therefore, a standalone bus-lane offence does not carry DIPS points; a separate offence committed at the same time may be dealt with separately (Singapore Statutes Online, current Road Traffic (Driver Improvement Points System) Rules, r. 3 and Schedule).

Rechecked on 2026-10-16: the current CSRO Annex lists driving in a bus lane during prohibited timings and failing to give way in a Mandatory Give Way to Bus lane as examples of commonly compounded offences; it explains that compounded offences conclude upon payment of a composition sum but does not publish either sum. SPF’s current published table of offences with demerit points and composition fines does not list either offence; LTA’s public offences page names driving in a bus lane during operating hours without stating a composition amount. The exact composition offers remain unpublished in the official public sources checked and cannot be inferred from the statutory ceilings (CSRO, Annex; CSRO, Annex — List of Commonly Compounded Offences; SPF, Penalties for Traffic Offences; LTA, Offences & Fines). The exact list of bus-only lane locations is not copied here.

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