No trucks
Trucks are prohibited from entering or travelling on the road ahead. Drivers of trucks must not pass this sign and should seek an alternative route. Note that this restriction applies to the road segment that follows, not a single point.
Verified as Thai road sign บ.15 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Prohibition signs like No trucks carry instant fines on the road and trick wording on the exam. Questions test where the rule starts, where it ends, and which adjacent signs cancel it. Practising it in the question flow keeps those edges fresh.
Now see it in questions.
Spotting No trucks in isolation is one thing. Recognising it inside a real exam-style question, among lookalikes and trick wording, is another. The diagnostic mixes it in for you.
