RockfallThailand
Traffic rules
Thailand
1. Rockfall
A rockfall warning indicates a road section where rocks or stones may fall from a cliff, cutting or steep slope, or where fallen material may already be present on the road. The danger may affect the full carriageway and can appear suddenly.
Drivers should reduce speed, scan the road and slopes ahead, increase their following distance and remain prepared to stop. They should avoid unnecessary stopping in the exposed section and never attempt to move unstable rocks themselves.
Where might falling rocks be a hazard on roads in Thailand?
A falling-rocks warning identifies a section where material may fall onto the road or already obstruct it. Check the road ahead, allow stopping distance and obey any closure or traffic-control instruction. Avoid stopping beneath an exposed slope unnecessarily.
Does a falling-rocks warning sign in Thailand impose a speed limit?
A falling-rocks sign is a hazard warning, not normally a numerical speed-limit sign. Follow any separate speed or closure signs, slow down to match visibility and conditions, and watch for material already on the road.
Warning for falling rocks.
English • Traffic sign ต.40 • Falling rocks. Rocks may fall or obstruct the surface ahead. Reduce speed and take care.
ไทย • ต.40 • ระวังหินร่วง. ข้างหน้าอาจมีหินร่วงลงมาหรือหินกีดขวางผิวทาง ให้ลดความเร็วและระวังอันตราย
Sources
🔗 Commons.wikimedia.org (Fiq Shafiq • CC BY-SA 3.0)
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 104
SVG source: Commons.wikimedia.org • Original SVG
Government of Thailand • Public domain • Original revision 2017-12-12. Wikimedia original unmodified.
Artwork reviewed against the Thai Department of Highways 2018 catalogue: Doh.go.th • PDF page 104. Catalogue-equivalent illustration; intentional update from the previous PNG.
What should you do if rocks are blocking the road in Thailand?
Slow or stop in a safe place away from the exposed slope if possible. Do not drive over unstable debris or stop beneath a cliff unnecessarily. Follow any closure or traffic-control instructions and report a dangerous obstruction through the appropriate road authority or emergency channel.
