Pass either side
Drivers may pass either to the left or to the right of the sign or obstruction where both paths rejoin the same route.
Verified as Thai road sign บ.42 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Pass either side sets a positive obligation, and exam questions usually probe two things: when it starts and what would override it. Practising it in the question flow makes both crisp.
Now see it in questions.
Spotting Pass either side 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.
