W5: Road Width Restrictions

Learn the meaning of road width restrictions signs. Compare the pictures, read the driving guidance and follow the linked official sources.

Sign explanations are currently available in English.

Explore these signs

6 signs in this collection. Every sign’s meaning is free to read; a free account opens the full explanation. Study counts cover unique published English materials across all states; availability depends on your state and access plan.

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6 signs

Type 1 object marker (yellow)

OM1-1

Meaning & what to do

Type 1 object marker (black)

OM1-2

Meaning & what to do

Reduced speed limit ahead

W3-5

Meaning & what to do

Road narrows

W5-1

Meaning & what to do

Narrow bridge

W5-2

Meaning & what to do

One-lane bridge

W5-3

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.

Sources checked October 27, 2026. Current guide illustrations: public-domain FHWA Standard Highway Signs. Historical illustrations: DMV One Way archive.