Speed limit (30 km/h)
Drivers must not exceed 30 km/h from this sign until the restriction ends. This limit commonly appears in school zones, residential areas, and other locations where low speeds are required. Note that speed limits in Thailand are enforced in km/h, not mph.
Verified as Thai road sign บ.32-30 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Speed limit (30 km/h) is a "don't", and the Thai exam likes to probe the until-when part: where the prohibition lifts, what overrides it, and whether common driver workarounds are still legal. Practising it in context makes the answer obvious.
Now see it in questions.
Spotting Speed limit (30 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.
