Reverse curve ahead, first to the right
The road ahead curves in one direction and then the other, beginning with a curve to the right. Reduce speed before the first curve.
Verified as Thai road sign ต.6 from Department of Rural Roads sign series on 2026-05-15.
Study guide
Connect this sign to practice
Most candidates can describe Reverse curve ahead, first to the right. The Thai exam tests whether you can pick it out of a roadside scene under time pressure and choose the right response. Practising it inside the question flow is what closes that gap.
Now see it in questions.
Spotting Reverse curve ahead, first to the right 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.
