Roadway narrows ahead on the right side
The road ahead becomes narrower on the right side. Reduce speed and be prepared to adjust your position toward the left side of the lane. Foreign drivers should note that oncoming traffic may be closer than expected through the narrowed section.
Verified as Thai road sign ต.24 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Roadway narrows ahead on the right side 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 Roadway narrows ahead on the right 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.
