Added lane ahead
An extra lane is being added to the road ahead. Drivers should be prepared for merging traffic or a change in lane configuration. Foreign drivers should note that the new lane may join from either side.
Verified as Thai road sign ต.44 from Thai Department of Land Transport sign series on 2026-05-15.
Study guide
Connect this sign to practice
Added lane ahead is a hazard cue, not a rule. On the Thai exam that distinction matters. Run a few questions to see how the scenario gets framed: which way to slow, who has priority, and what the next sign is likely to be.
Now see it in questions.
Spotting Added lane 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.
