Bus lane
The marked lane is reserved for buses where the bus-lane control applies.
Verified as Thai road sign บ.49 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Bus lane 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 Bus lane 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.
