Right obstruction marker
A black-and-yellow obstruction marker identifies a roadside or carriageway obstruction. Keep clear of the marked hazard.
Verified as Thai road sign ต.73 from Department of Rural Roads sign series on 2026-05-15.
Study guide
Connect this sign to practice
Warning signs like Right obstruction marker 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 Right obstruction marker 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.
