Warning sign
Slippery road sign
What does the Slippery road sign mean?
Warns that the road ahead may be slippery. Slow down before you reach it and avoid harsh braking, accelerating or steering.
Also known as: Skidding car sign
What it means
The road surface ahead may give less grip than usual, so you are more likely to skid. Adjust your speed before you reach the hazard, not on it.
The symbol shows a car with skid marks behind it. A plate underneath may show how far away the hazard is, or how far it continues.
Less grip means it takes longer to stop and it's easier to lose control. Keep further back from the vehicle in front, and brake, steer and accelerate smoothly.
Where you'll see it
Before a stretch of road where the surface may be slippery. The hazard is usually worse when the road is wet or icy.
Rules to know
Skidding is usually caused by braking, accelerating or steering too harshly, or by driving too fast for the road conditions.
The Highway Code, Rule 119
In wet weather, stopping distances will be at least double those needed on dry roads.
The Highway Code, Rule 227
On icy roads, drive at a slow speed in as high a gear as possible, and accelerate and brake very gently.
The Highway Code, Rule 231
A plate under a warning sign can show the distance to the hazard, or the distance over which it extends.
Know Your Traffic Signs, p. 12
Common mistakes
Mistake: Braking hard once you're already on the slippery section.
Instead: Slow down before you reach it. Skids are usually caused by braking, accelerating or steering too harshly, or by going too fast for the conditions.
Test yourself
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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
Loose chippings
Temporary sign
Loose stones that reduce grip.
See also
Road works
Temporary sign
Another warning triangle: works or an obstruction ahead.
More warning signs
All warning signsSources
- Know Your Traffic Signs (Department for Transport, Sixth edition, 2023), Warning signs, p. 12
- The Highway Code, Rules 119, 227 and 231
Sign image: Department for Transport, Traffic sign images (diagram 557). © Crown copyright, reused under the Open Government Licence v3.0.
Checked against these sources and reviewed by Bikash Thapa, full UK driving licence holder. Last reviewed 4 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