Priority at the next junctionThailand

An introduction to the traffic rules and road signs of Thailand. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.


1. Priority at the next junction

Priority at the next junction means that drivers travelling on a particular road have priority over traffic entering from intersecting roads at the next junction. The priority arrangement is normally indicated by signs facing both the priority traffic and the traffic that must give way.

Unlike a continuing priority road, this priority applies only at the indicated intersection. Drivers must still approach cautiously and obey traffic lights, authorised officers, crossings, turning rules and other applicable signs.

How is priority at the next junction determined in Thailand?

Check signs, markings, signals and the statutory rules. Section 72 identifies a main road from the specified priority controls and, where those controls are absent, from having more lanes than the intersecting road. A road intersecting an alley or lane is also a main road. Section 71 then governs yielding at the junction.

🔗 aipalync.org • Act 71–72; explicit main-road criteria and statutory fallback

🔗 laksong.metro.police.go.th • Official Police-hosted Gazette — full enacted Road Traffic Act amendment 13, 2022

🔗 network.doh.go.th • DOH — complete 2020 highway-sign Regulation, actual sign and marking meanings

Does priority at one junction automatically continue along the entire road in Thailand?

Assess the next junction from its controls and Sections 71–72. Do not infer continuing priority solely from a route name or destination sign. Main-road status may follow specified signs or markings, the statutory lane-number fallback where those controls are absent, or the road-versus-alley rule. Signals and authorised directions still apply.

🔗 aipalync.org • Act 71–72; explicit main-road criteria and statutory fallback

🔗 laksong.metro.police.go.th • Official Police-hosted Gazette — full enacted Road Traffic Act amendment 13, 2022

🔗 network.doh.go.th • DOH — complete 2020 highway-sign Regulation, actual sign and marking meanings

May a driver with priority ignore pedestrians or another safety obligation at the next junction in Thailand?

No. Junction priority does not cancel duties towards pedestrians, traffic signals, emergency vehicles or other road users where the law gives them precedence. Approach at a speed allowing you to stop safely.

🔗 aipalync.org • Act 71–72; explicit main-road criteria and statutory fallback

🔗 laksong.metro.police.go.th • Official Police-hosted Gazette — full enacted Road Traffic Act amendment 13, 2022

🔗 network.doh.go.th • DOH — complete 2020 highway-sign Regulation, actual sign and marking meanings