prohibition sign
Maximum weight 25 tonnes
Thai road sign บ.33 (25 ตัน) — Maximum weight 25 tonnes. Meaning: Vehicles with a total weight exceeding 25 tonnes are prohibited from passing this point. Catalog status: additional official road-sign reference.
Thai name: ป้ายจำกัดน้ำหนัก
Independent English reference · Source: Department of Highways · Sign บ.33 (25 ตัน)
Road response
On the road
Driver action
What should you do?
Vehicles with a total weight exceeding 25 tonnes are prohibited from passing this point.
Exam-style scenario
Read the situation
Your vehicle and load together weigh 24 tonnes as a 25-tonne restriction begins.
Best response: The 24-tonne total is below the signed maximum, so proceed only if no other restriction applies.
Sign comparison
Don’t confuse it
This sign
Maximum weight 25 tonnes
Compare with
Weight limit (10 tonnes)
Key difference
This sign sets a 25-tonne total-weight ceiling; the related red-ring sign displays a much lower 10-tonne threshold.
Put sign knowledge into practice.
Answer exam-style questions about road signs, traffic lights, and lane markings in clear English.
