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One Lane Road: What It Means & What To Do

One Lane Road (W20-3) - diamond orange with black construction sign: The road is reduced to one lane ahead
MUTCD CodeW20-3
CategoryConstruction Signs
ShapeDiamond
ColorOrange with black

What Does the One Lane Road Mean?

The road is reduced to one lane ahead. Be prepared to take turns with oncoming traffic.

About This Sign

In construction zones, one lane may be closed, requiring traffic from both directions to share a single lane.

Other Construction Signs

No Passing Zone (W14-3) - pennant (isosceles triangle) yellow with black construction sign: You are entering a no-passing zone

No Passing Zone

W14-3

Road Work Ahead (W20-1) - diamond orange with black construction sign: Construction or maintenance work is ahead

Road Work Ahead

W20-1

Detour (W20-2) - rectangle (horizontal) orange with black construction sign: Follow the detour route to bypass a closed section of road

Detour

W20-2

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