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UK Road Signs

Warning sign

Agricultural vehicles sign

Agricultural vehicles warning sign: a red-bordered triangle with a black tractor
Sign image: Department for Transport, © Crown copyright

What does the Agricultural vehicles sign mean?

Warns that farm vehicles such as tractors may be on or crossing the road. Slow down and be patient.

Also known as: Tractor sign, Farm vehicles sign

What it means

Agricultural vehicles may be in or crossing the road ahead.

The tractor symbol warns that farm vehicles use or cross the road here. They are often slow and wide, and may pull out of field entrances.

Slow down, keep a safe distance and only overtake when you can see it is safe.

Where you'll see it

On rural roads near farms and fields, especially at harvest time.

Rules to know

Common mistakes

  • Mistake: Tailgating a tractor and then overtaking in a rush.

    Instead: Stay back, be patient and overtake only where you have a clear view and enough room.

Test yourself

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What does this sign mean?

Red-bordered white triangle with a black silhouette of a tractor with a large rear wheel

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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 553.1). © 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