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UK Road Signs

Warning sign

Slow-moving military vehicles sign

Slow-moving military vehicles warning sign: a red-bordered triangle with a black tank
Sign image: Department for Transport, © Crown copyright

What does the Slow-moving military vehicles sign mean?

Warns that slow-moving military vehicles may be on or crossing the road.

Also known as: Military vehicles sign, Tank sign

What it means

Slow-moving military vehicles are likely to be in or crossing the road.

The tank symbol warns of slow-moving military vehicles, such as near army training areas and bases.

Slow down, keep back and be patient. Heavy vehicles may be wide and slow to turn.

Where you'll see it

Near military training areas, bases and ranges.

Rules to know

  • The sign warns of slow-moving military vehicles likely to be in or crossing the road.

    Know Your Traffic Signs, p. 13

Common mistakes

  • Mistake: Overtaking without a clear view.

    Instead: Wait until you can see that the road ahead is clear and that you have enough space.

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?

Red-bordered white triangle with a black tracked armoured vehicle with a long gun barrel

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© 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.

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Sources

Sign image: Department for Transport, Traffic sign images (diagram 582). © 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