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Reverse Curve: What It Means & What To Do

Reverse Curve (W1-4) - diamond yellow with black warning sign: The road curves in one direction, then curves in the opposite direction
MUTCD CodeW1-4
CategoryWarning Signs
ShapeDiamond
ColorYellow with black

What Does the Reverse Curve Mean?

The road curves in one direction, then curves in the opposite direction.

About This Sign

Similar to a reverse turn but with gentler curves. Expect the road to change direction twice in succession.

Commonly Confused With

Other Warning Signs

Frequently Asked Questions

What does the Reverse Curve mean?

The road curves in one direction, then curves in the opposite direction.

What shape and color is the Reverse Curve?

The Reverse Curve uses the Diamond shape and Yellow with black coloring.

Practice Road Sign Questions

Test your knowledge of road signs with free DMV practice tests.

Reverse Curve Meaning 2026 - DMV Test Guide & Free Practice | DMV IQ