Speed limit (100 km/h)
Drivers must not exceed 100 km/h on the road section ahead. The limit applies until a new speed limit sign or an end-of-restrictions sign cancels it. Note that Thailand enforces speed limits by camera as well as by police checkpoint, so compliance is important even on quiet roads.
Verified as Thai road sign บ.32-100 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Speed limit (100 km/h) is one of the prohibition signs candidates lose marks on. Not because the symbol is unfamiliar, but because the question reframes the scenario. Practising it in the flow surfaces those reframings before test day.
Now see it in questions.
Spotting Speed limit (100 km/h) 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.
