Speed limit (20 km/h)
Drivers must not exceed 20 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. Typically used in school zones, dense pedestrian areas, or near construction.
Verified as Thai road sign บ.32-20 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Knowing what Speed limit (20 km/h) means is the easy half. The harder half is which exceptions apply: emergency vehicles, residents, time-of-day rules. The Thai exam asks about exactly those. Run a few questions to lock it in.
Now see it in questions.
Spotting Speed limit (20 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.
