prohibition sign
No U-turn to the left
Thai road sign บ.7 — No U-turn to the left. Meaning: Drivers must not make a U-turn to the left at this point. 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: ป้ายห้ามกลับรถไปทางซ้าย
Independent English reference · Source: Department of Highways · Sign บ.7
Road response
On the road
Driver action
What should you do?
Do not make a U-turn to the left at the point controlled by this sign.
Exam-style scenario
Read the situation
You want to reverse direction across the left side of the carriageway, but this sign controls the turning point.
Best response: Do not reverse direction at this turning point; continue until a permitted route is available.
Sign comparison
Don’t confuse it
This sign
No U-turn to the left
Compare with
No U-turn to the right
Key difference
The crossed curved arrow bends toward the left, so only a left-hand U-turn is prohibited; the companion sign's arrow bends right.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
