Roundabout
Drivers entering the roundabout must circulate to the left and yield to traffic already moving around the roundabout.
Verified as Thai road sign บ.48 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Roundabout sets a positive obligation, and exam questions usually probe two things: when it starts and what would override it. Practising it in the question flow makes both crisp.
Now see it in questions.
Spotting Roundabout 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.
