warning sign
Sharp reverse curve ahead, first to the right
Thai road sign ต.8 — Sharp reverse curve ahead, first to the right. Meaning: The road ahead has sharp reverse curves, beginning with a sharp curve to the right. 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: ป้ายเตือนทางโค้งกลับรัศมีแคบ
Independent English reference · Source: Department of Highways · Sign ต.8
Road response
On the road
Driver action
What should you do?
Slow down early and keep to the lane.
Exam-style scenario
Read the situation
The sign shows a tight right bend immediately followed by a tight left bend.
Best response: Slow early for the tight right bend and anticipate the sharp left bend directly after it.
Sign comparison
Don’t confuse it
This sign
Sharp reverse curve ahead, first to the right
Compare with
Sharp reverse curves ahead — first left
Key difference
Its angular double-bend begins with a sharp right; the mirrored version begins with a sharp left.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
