Speed limit (50 km/h)
Drivers must not exceed 50 km/h from this sign onward. The limit remains in force until an end-of-restriction sign or a different speed limit sign is posted. Foreign drivers should note that speed limit signs in Thailand apply to all vehicle types unless a separate sign states otherwise.
Verified as Thai road sign บ.32-50 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Speed limit (50 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 (50 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.
