Warning sign
Slow-moving military vehicles sign
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.
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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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Agricultural vehicles
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Another warning of slow vehicles.
See also
Level crossing without barrier or gate
Warning sign
Another hazard where vehicles cross the road.
More warning signs
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- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Warning signs, p. 13
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