Left lane ends ahead
The left lane is ending ahead; drivers in that lane must merge safely into the lane to the right. Be prepared for traffic slowing or shifting as the lane narrows.
Verified as Thai road sign ต.26 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Left lane ends ahead 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 Left lane ends ahead 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.
