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Truck rollover sign

W1-13 / Warning signs

This sign warns truck drivers that the curve ahead can cause a truck to tip…

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Truck rollover sign (W1-13)
Sharp turn sign (W1-1)

Sharp turn

W1-1

Meaning & what to do
Ramp advisory speed sign (W13-3)

Ramp advisory speed

W13-3

Meaning & what to do
Trucks use lower gear sign (W7-2bP)

Trucks use lower gear

W7-2bP

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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