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Curve sign

W1-2 / Warning signs

The road curves ahead in the direction of the arrow. The Curve sign is used for…

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Curve sign (W1-2)
Sharp turn sign (W1-1)

Sharp turn

W1-1

Meaning & what to do
Reverse curve sign (W1-4)

Reverse curve

W1-4

Meaning & what to do
Advisory speed sign (W13-1P)

Advisory speed

W13-1P

Meaning & what to do

Sources & scope

Independent educational summaries by DMV One Way. Sign designs follow MUTCD conventions; state and local rules can add restrictions. Use your current state handbook and the signs on the road for the rules that apply to your trip.

This explanation has not been reviewed yet. Current guide illustrations: public-domain FHWA Standard Highway Signs. Historical illustrations: DMV One Way archive.

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