Work-zone detour to the right
Traffic must follow a temporary detour to the right through or around a road-work zone. Reduce speed and follow the indicated direction.
Verified as Thai road sign ตค.23 from Department of Highways sign series on 2026-05-15.
Study guide
Connect this sign to practice
Work-zone detour to the right sits in a cluster of warning signs that look uncomfortably similar. The Thai exam exploits that overlap. Reviewing it next to its visual neighbours in the question flow keeps the differences sharp on test day.
Now see it in questions.
Spotting Work-zone detour 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.
