Warning Road Sign (W9-2)
Lane Ends Merge Left Sign Meaning & Driving Rules
The Lane Ends Merge Left sign (MUTCD W9-2) warns that the right-hand travel lane is terminating ahead, requiring vehicles in that lane to merge safely into the adjacent left lane.
Required Driver Action & Right-of-Way Protocol
Check your mirrors and left blind spot. Signal your intention to merge, match traffic speed, and blend smoothly into a safe gap in the continuing left lane.
Detailed Overview & Purpose
Installed in advance of lane drops, highway narrowing, and construction choke points, this sign alerts motorists that their travel lane will end. Drivers in the terminating right lane must signal, check blind spots, adjust speed, and merge into gaps in the continuing left lane without disrupting traffic flow.
Key Standard & Origin: The zipper merge technique (drivers using both lanes until the merge point, then taking turns) is proven to reduce traffic backups by up to 40%.
Where You'll Find This Sign
Installed 500 to 1,500 feet before the termination of a multi-lane highway travel lane.
Common Driver Mistakes to Avoid
Speeding up to race ahead of other vehicles at the last second, forcing an abrupt and dangerous merge.
How This Sign Appears on the DMV Knowledge & Road Test
Tests safe merging practices, blind spot checks, and right-of-way rules when lanes terminate.
Legal Penalties and Moving Violations
Cutting off traffic or forcing an unsafe merge carries moving violation citations and driving points.
Sign Variations & Related Types
Right Lane Ends (W9-1)
Text-based variant indicating the right lane is ending.
Lane Ends Symbol (W4-2)
Depicts a graphic of a lane tapering into an adjacent through-lane.
When you encounter the official Lane Ends Merge Left (W9-2) on a roadway, what is your legal duty?
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