Straight or left only
Drivers must continue straight or turn left at the junction ahead and must not turn right.
Verified as Thai road sign บ.46 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Straight or left only is a "do this" sign, but the Thai exam will phrase it as "what's the legal action here". Same answer, different angle. Practising the wording of the question, not just the symbol, is what closes the gap.
Now see it in questions.
Spotting Straight or left only 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.
