Information sign
Unsuitable for motor vehicles sign
What does the Unsuitable for motor vehicles sign mean?
Warns that the route is unsuitable for motor vehicles, for example a narrow track or bridleway.
Also known as: Route unsuitable for motor vehicles
What it means
This route is unsuitable for motor vehicles.
The wording can be varied to show that a route is unsuitable for a type of vehicle.
Treat it as strong advice. The route may be too narrow, steep or rough for the vehicle.
Where you'll see it
At the start of narrow, steep or rough lanes.
Rules to know
Route unsuitable for type of vehicle indicated. In addition to the signs above, the legend may be varied to indicate other types of vehicles.
Know Your Traffic Signs, p. 135
Common mistakes
Mistake: Following a sat nav down the lane.
Instead: Read the sign. The route may not be suitable for your vehicle.
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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.
Related signs
Similar
Unsuitable for heavy goods vehicles
Information sign
The same advice for heavy goods vehicles.
See also
No motor vehicles
Regulatory sign
A red ring that legally bans motor vehicles.
More information signs
All information signs
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- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Information signs, p. 135
Sign image: Department for Transport, Traffic sign images (diagram 820). © 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