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Slower Traffic Keep Right: What It Means & What To Do

Slower Traffic Keep Right (R4-3) - rectangle (vertical) white with black/red regulatory sign: Vehicles traveling slower than the normal speed of traffic should use the right lane
MUTCD CodeR4-3
CategoryRegulatory Signs
ShapeRectangle (vertical)
ColorWhite with black/red

What Does the Slower Traffic Keep Right Mean?

Vehicles traveling slower than the normal speed of traffic should use the right lane.

About This Sign

This sign reminds slower-moving vehicles to move to the right lane, allowing faster traffic to pass on the left.

Other Regulatory Signs

Frequently Asked Questions

What does the Slower Traffic Keep Right mean?

Vehicles traveling slower than the normal speed of traffic should use the right lane.

What shape and color is the Slower Traffic Keep Right?

The Slower Traffic Keep Right uses the Rectangle (vertical) shape and White with black/red coloring.

Practice Road Sign Questions

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Slower Traffic Keep Right Meaning 2026 - DMV Test Guide & Free Practice | DMV IQ