Speed limit (40 km/h)
Drivers must not exceed 40 km/h from this sign onward. The limit remains in force until an end-of-restrictions sign or a new speed-limit sign is displayed. Note that speed limits in Thailand are enforced in both urban and rural areas, so watch for this sign whenever road conditions change.
Verified as Thai road sign บ.32-40 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Prohibition signs like Speed limit (40 km/h) 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 Speed limit (40 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.
