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Single Solid White Line: What It Means & What To Do

Single Solid White Line (PM-5) - solid line white pavement marking sign: Marks the edge of the road or a lane where changing lanes is discouraged
MUTCD CodePM-5
CategoryPavement Markings
ShapeSolid line
ColorWhite

What Does the Single Solid White Line Mean?

Marks the edge of the road or a lane where changing lanes is discouraged.

About This Sign

A single solid white line marks the right edge of the road, or separates same-direction lanes where changing lanes is discouraged. Stay within your lane and cross only when necessary and safe.

Other Pavement Markings

Frequently Asked Questions

What does the Single Solid White Line mean?

Marks the edge of the road or a lane where changing lanes is discouraged.

What shape and color is the Single Solid White Line?

The Single Solid White Line uses the Solid line shape and White coloring.

Practice Road Sign Questions

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Single Solid White Line Meaning 2026 - DMV Test Guide & Free Practice | DMV IQ