Sharp left curve ahead
The road ahead has a sharp curve to the left. Slow down more than for an ordinary curve and prepare to steer carefully.
Verified as Thai road sign ต.3 from Department of Rural Roads sign series on 2026-05-15.
Study guide
Connect this sign to practice
Warning signs like Sharp left curve ahead test whether you spot the hazard early enough to react. The Thai theory exam often pairs them with stopping-distance, visibility, and right-of-way questions, so practising the symbol alongside its scenarios makes the wording less of a trap.
Now see it in questions.
Spotting Sharp left curve ahead 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.
