Speed bumpThailand
Traffic rules
Thailand
1. Speed bump
A speed bump is a raised traffic-calming device placed across all or part of a road to make drivers reduce their speed. It is commonly used near homes, schools, crossings, parking areas and other places where low vehicle speeds are important.
Speed bumps vary in shape, height and legal status. Drivers should approach them at a low, controlled speed and follow any warning signs or speed limits that apply.
How should I recognise and approach a speed bump in Thailand?
Look for a raised surface, approach warnings, road markings and any separate speed instruction. A traffic-calming device can be part of a raised crossing or junction, so identify the layout and the road users who may use it.
Warning for a speed bump.
English • Traffic sign ต.35 • Hump or level change. The road surface may cause vehicles to bounce; reduce speed before passing.
ไทย • ต.35 • รถกระโดด. ข้างหน้ามีการเปลี่ยนระดับหรือเนินบนผิวทาง ซึ่งอาจทำให้รถกระโดด ให้ลดความเร็วก่อนผ่าน
Sources
🔗 Commons.wikimedia.org (Fiq Shafiq • CC BY-SA 3.0)
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 102
SVG source: Commons.wikimedia.org • Original SVG
Government of Thailand • Public domain • Original revision 2017-12-16. Wikimedia original unmodified.
Artwork reviewed against the Thai Department of Highways 2018 catalogue: Doh.go.th • PDF page 102. Catalogue-equivalent illustration; intentional update from the previous PNG.
Which speed should I use at a raised device in Thailand?
Obey the applicable speed restriction and slow further for the device, visibility and other road users. Do not assume that a raised device carries the same numerical rule as one in another country; a safe approach can be well below the road’s maximum.
Does a raised road surface give pedestrians priority in Thailand?
A raised device alone does not identify pedestrian priority. If it incorporates a crossing, apply the crossing’s controls and the national rules. Drivers must respect pedestrian crossings and traffic signals and exercise caution around people crossing. Pedestrians must use a nearby provided crossing where the Act requires it; a warning sign does not replace the crossing controls.
