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Broken White Lane Line: What It Means & What To Do

Broken White Lane Line (PM-3) - broken line white pavement marking sign: Separates lanes going the same direction
MUTCD CodePM-3
CategoryPavement Markings
ShapeBroken line
ColorWhite

What Does the Broken White Lane Line Mean?

Separates lanes going the same direction. You may change lanes across it when it is safe.

About This Sign

A broken (dashed) white line separates two or more lanes of traffic moving in the same direction. You may change lanes across it when it is safe to do so.

Other Pavement Markings

Broken Yellow Center Line (PM-1) - broken line yellow pavement marking sign: Separates traffic moving in opposite directions

Broken Yellow Center Line

PM-1

Solid Double Yellow Lines (PM-2) - double solid line yellow pavement marking sign: Two solid yellow lines

Solid Double Yellow Lines

PM-2

Solid Double White Lines (PM-4) - double solid line white pavement marking sign: Separate same-direction lanes that you must not cross

Solid Double White Lines

PM-4

Frequently Asked Questions

What does the Broken White Lane Line mean?

Separates lanes going the same direction. You may change lanes across it when it is safe.

What shape and color is the Broken White Lane Line?

The Broken White Lane Line uses the Broken line shape and White coloring.

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