Yes, lane splitting is legally permitted in Thailand, but only under strict conditions established by the Royal Thai Police and the Department of Land Transport.
Lane splitting is tolerated in low-speed traffic conditions, provided motorcyclists do not exceed 10 km/h relative to surrounding vehicles and maintain a safe distance. The Royal Thai Police’s 2023 Traffic Safety Directive explicitly permits this practice in Bangkok, Chiang Mai, and Phuket, though local enforcement varies. Failure to adhere to speed limits or reckless maneuvering can result in fines up to 5,000 THB under the Road Traffic Act B.E. 2522 (1979), amended in 2026 to include clearer lane-splitting guidelines. Insurance claims may be denied if violations are documented.
Key Regulations for Lane Splitting in Thailand
- Speed Compliance: Motorcycles must not exceed 10 km/h relative to adjacent vehicles; exceeding this voids legal protection.
- Traffic Conditions: Lane splitting is prohibited during high-speed traffic (>30 km/h) or on highways where posted limits exceed 60 km/h.
- Safety Protocols: Riders must use turn signals, avoid abrupt lane changes, and yield to pedestrians; violations are penalized under Section 47 of the Road Traffic Act.
Local traffic police in Bangkok’s Special Traffic Police Division and provincial units enforce these rules inconsistently, often prioritizing speeding over lane discipline. The Department of Land Transport plans to introduce mandatory lane-splitting education modules for riders by 2027, aligning with ASEAN road safety standards. Riders should carry proof of insurance and a valid motorcycle license (or international permit) to mitigate liability risks during enforcement stops.