Skip to main content
UK Road Signs

Warning sign

Arch bridge: high vehicles use middle sign

Arch bridge plate: a white rectangle with the words Arch bridge, High vehicles use middle of road
Sign image: Department for Transport, © Crown copyright

What does the Arch bridge: high vehicles use middle sign mean?

At an arch bridge, high vehicles must use the middle of the road, where the arch is highest. Give way to them.

Also known as: Arch bridge plate

What it means

High vehicles should use the middle of the road under the arch.

The headroom under an arch bridge is greatest in the middle. Road markings guide high vehicles through the highest part.

Drivers of all vehicles should give way to oncoming high vehicles in the middle of the road when there is not enough room to pass.

Where you'll see it

At arch bridges with limited headroom at the sides.

Rules to know

  • Road markings guide high vehicles through the highest part of the arch. Drivers of all vehicles should give way to oncoming high vehicles in the middle of the road when there is insufficient room to pass.

    Know Your Traffic Signs, p. 26

Common mistakes

  • Mistake: Not giving way to a high vehicle coming through the middle.

    Instead: Wait for it: it needs the highest part of the arch.

Test yourself

Recalling the answer helps it stick. Pick an answer to see how you did.

Question 1 of 1

What does this sign mean?

White upright plate with a black border and six short lines of black text

Ready for more? Take the Warning Signs Quiz

Download this sign

© Crown copyright. Free to reuse under the Open Government Licence v3.0, as long as the sign is reproduced accurately and not in a misleading context.

More warning signs

All warning signs

Share this sign

Pinterest (opens in a new tab)Facebook (opens in a new tab)X (opens in a new tab)WhatsApp (opens in a new tab)Email

Sources

Sign image: Department for Transport, Traffic sign images (diagram 531.2). © Crown copyright, reused under the Open Government Licence v3.0.

Last reviewed 11 October 2026. This page explains the sign in our own words; for the full rules, see The Highway Code. How we source and check content