Warning Road Sign (W8-9a)
Uneven Lanes Ahead Sign Meaning & Driving Rules
Warns that adjacent travel lanes are at different heights due to construction, resurfacing, or paving operations.
Required Driver Action & Right-of-Way Protocol
Avoid unnecessary lane changes. If changing lanes, do so at a gradual angle with both hands firmly on the wheel.
Detailed Overview & Purpose
The Uneven Lanes sign (W8-9a) is posted in work zones where paving crews have paved one lane but not the adjacent lane, creating a longitudinal lip between lanes. Changing lanes across this ridge can destabilize vehicles, especially motorcycles.
Key Standard & Origin: Motorcyclists and small cars are particularly vulnerable to losing balance when crossing uneven lane ridges.
Where You'll Find This Sign
Active highway resurfacing and paving work zones.
Common Driver Mistakes to Avoid
Changing lanes aggressively across the uneven ridge at high speed.
How This Sign Appears on the DMV Knowledge & Road Test
Work zone hazard management and motorcycle safety test question.
Legal Penalties and Moving Violations
Speeding or driving recklessly in uneven lane work zones carries doubled fines.
When you encounter the official Uneven Lanes Ahead (W8-9a) on a roadway, what is your legal duty?
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