warning sign
Danger of falling rocks ahead
Thai road sign ต.40 — Danger of falling rocks ahead. Meaning: This sign warns that rocks may fall onto the road ahead. 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: ป้ายเตือนหินร่วง
Independent English reference · Source: Department of Highways · Sign ต.40
Road response
On the road
Driver action
What should you do?
Reduce speed and be ready to stop or steer safely around rocks on the carriageway.
Exam-style scenario
Read the situation
Fresh debris is visible near the foot of a rock face after this warning.
Best response: Reduce speed near the rock face and be ready to stop before or steer safely around the visible debris.
Sign comparison
Don’t confuse it
No close comparison recorded
No verified comparison sign is recorded for this entry. Compare the related signs below.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
