Is it illegal to drive with snow on your car roof?
It is tempting on a cold morning to scrape a hole in the windscreen and set off. But driving with a car full of snow, including on the roof, can land you with a fine and penalty points, and it can be genuinely dangerous for the drivers behind you.
This guide explains what the law and the Highway Code say, what the penalties can be and how to clear your car quickly and properly.
Last updated 9 November 2026. Rules come from the Highway Code on GOV.UK.
Key takeaways
- There is no specific law banning snow on your roof, but you must be able to see clearly before you drive.
- Highway Code Rule 229 says you must clear snow and ice from all windows, keep your lights clean and make your number plates readable.
- It also says you should remove snow that might fall off into the path of other road users.
- Driving without a clear view can mean a fixed penalty of £60 and three points, and more if it goes to court.
- If snow from your car causes a crash, you could be charged with careless driving.
In this guide
- What the Highway Code says
- So is snow on the roof illegal?
- Fines and penalty points
- How to clear snow from your car properly
- What about tall vehicles and vans?
- Frequently asked questions
- Sources and further reading
What the Highway Code says
Rule 229 covers what to do before you set off in winter. It says:
- you must be able to see, so clear all snow and ice from all your windows
- you must make sure your lights are clean and your number plates are clearly visible and legible
- make sure the mirrors are clear and the windows are demisted thoroughly
- remove all snow that might fall off into the path of other road users
- check your planned route is clear of delays and that no further snowfalls or severe weather are predicted
In the Highway Code, rules that use the word must are backed by law. The advice about snow on the roof is a should, which means it is not an offence on its own. But if snow from your roof causes a problem, the rule can be used as evidence against you.
So is snow on the roof illegal?
Not in itself. The legal problems start when the snow:
- slides down over your windscreen when you brake, blocking your view
- blows off onto the car behind, startling or blinding the other driver
- covers your lights or number plates
- causes a crash or near miss
Police can stop you if they think your car is not safe to drive or your view is obscured, whether the cause is an iced-up windscreen or snow that has fallen from the roof.
Fines and penalty points
The penalties depend on what the police decide to charge you with.
| Offence | Typical penalty |
|---|---|
| Driving without a proper view of the road | £60 fixed penalty and 3 points, or a higher fine if it goes to court |
| Obscured or unreadable number plate | Fine of up to £1,000 |
| Using a vehicle in a dangerous condition | 3 points and a fine of up to £2,500 for a car |
| Careless driving (for example, if snow falls and causes a crash) | 3 to 9 points and an unlimited fine if it goes to court |
Points on your licence will also need to be declared to your insurer, which can push up your premium.
How to clear snow from your car properly
- Start the engine and stay with the car. Turn the heater to the windscreen and switch on air conditioning, which dries the air and clears the glass faster. Do not leave the car unattended while it runs.
- Clear the roof first. Use a soft snow brush or a plastic scraper to push snow off the roof, so it does not fall onto glass you have already cleared.
- Clear every window. Not just a porthole in the windscreen. You need the side windows clear to see at junctions.
- Clear the mirrors, lights and number plates.
- Clear the bonnet, so snow does not blow up onto the windscreen as you drive.
- Check the wipers are not frozen to the glass before switching them on.
Never use a spade or anything metal on paintwork or glass, and never pour boiling water on the windscreen. The sudden temperature change can crack it. Our demisting and defrosting guide has more tips.
What about tall vehicles and vans?
Clearing a van or SUV roof can be hard if you cannot reach it. A long-handled snow brush helps. If you genuinely cannot clear the roof, drive extra carefully, brake gently and leave a bigger gap, because snow is most likely to slide forward when you brake.
Frequently asked questions
Can I get points for snow on my roof if it is not blocking my view?
It is unlikely on its own, but if it falls off and causes danger to other road users, you could be stopped and penalised. The safest approach is to clear it.
Is it illegal to drive with an iced-up windscreen?
Yes. You must be able to see clearly through all windows. Driving with a windscreen that is only partly clear can lead to a fine and points.
Is it illegal to leave my engine running to defrost the car?
On a public road, leaving your engine running unnecessarily or leaving the car unattended with the engine running are both offences. See our guide on leaving your car running to defrost.