prohibition sign
No tricycle
Thai road sign บ.19 — No tricycle. Meaning: Tricycles are prohibited from entering or travelling on 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: ป้ายห้ามรถสามล้อ
Independent English reference · Source: Department of Highways · Sign บ.19
Road response
On the road
Driver action
What should you do?
Tricycles are prohibited from entering or travelling on the road ahead. Drivers of tricycles must not proceed beyond this sign.
Exam-style scenario
Read the situation
You are using a non-motorised tricycle and see this sign before the road ahead.
Best response: Do not take the non-motorised tricycle into the signed road section.
Sign comparison
Don’t confuse it
This sign
No tricycle
Compare with
No 3-wheeled motor vehicles
Key difference
The tricycle symbol covers the non-motorised pedal vehicle; the three-wheeled-motor-vehicle sign depicts a powered vehicle.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
