warning sign
Uneven road surface ahead
Thai road sign ต.36 — Uneven road surface ahead. Meaning: The road surface ahead is uneven or rough. Learner-manual coverage: this identity is shown in the current DLT car-driver learner manual. Inclusion does not mean it appears in every theory test.
Thai name: ป้ายเตือนผิวทางขรุขระ
Independent English reference · Source: Department of Highways · Sign ต.36
Road response
On the road
Driver action
What should you do?
Drivers should reduce speed, keep a firm grip on the steering wheel, and watch for sudden changes in road level.
Exam-style scenario
Read the situation
The warning precedes a section where repeated surface changes can unsettle the vehicle.
Best response: Reduce speed before the repeated surface changes and keep the steering steady through the uneven section.
Sign comparison
Don’t confuse it
This sign
Uneven road surface ahead
Compare with
Speed hump
Key difference
Repeated humps in the symbol warn of an uneven section; the speed-hump sign shows one isolated raised feature.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
