warning sign
U-turn point ahead on the left
Thai road sign ต.51 — U-turn point ahead on the left. Meaning: A U-turn opening or U-turn point is ahead on the left. 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: ป้ายเตือนจุดกลับรถ
Independent English reference · Source: Department of Highways · Sign ต.51
Road response
On the road
Driver action
What should you do?
A U-turn opening or U-turn point is ahead on the left. Drivers who need to turn around should prepare early, reduce speed, and move into the correct lane when safe.
Exam-style scenario
Read the situation
The indicated U-turn point lies on the left, so a late move from the right lane would be unsafe.
Best response: Move toward the left-side U-turn approach in good time instead of cutting across from the right lane.
Sign comparison
Don’t confuse it
This sign
U-turn point ahead on the left
Compare with
U-turn point ahead on the right
Key difference
The advance arrow places the upcoming U-turn opening on the left; the mirrored warning places it on the right.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
