Every Driver Moving Off With a Misted Windscreen Risks 3 Points and a £1,000 Fine

• Regulation 104 of the Construction and Use Regulations 1986 bars driving a motor vehicle on a road without a full view ahead, and regulation 30 requires the glass to be kept in a condition that does not obscure the driver’s vision.
• The penalty table in Annex 5 of the Highway Code sets a ceiling of £1,000 and 3 penalty points for failing to have a full view of the road, with disqualification left to the court’s discretion.
• Motorpoint’s Ben Custard, quoted by The Sun, names the fix: air conditioning on, recirculation off and the front demist button pressed with the windows shut.

The Law Treats a Fogged Windscreen as the Driver’s Problem

A windscreen still misted when the handbrake comes off puts the driver on the wrong side of the law. Regulation 104 of the Road Vehicles (Construction and Use) Regulations 1986 forbids driving a motor vehicle on a road from a position where the driver cannot control it properly or cannot see the road and the traffic ahead in full. A driver peering through a patch of clear glass cannot.

The price is set in Annex 5 of the Highway Code, which lists the penalties Parliament has set for the main motoring offences. The row for failing to have proper control of a vehicle or full view of the road uses the same wording as regulation 104. It carries a fine of up to £1,000 and 3 penalty points. A court can also disqualify the driver. Passenger-carrying and goods vehicles face a higher ceiling of £2,500, which is 2.5 times the standard figure.

The cure takes three controls on the dashboard and a little patience before pulling away. Ben Custard, an expert at Motorpoint, names them, and the routine below follows his advice step by step. Cold mornings in mid-November are the season for it, and the rule applies to every trip, short or long.

Where the Rule Comes From

Two regulations sit behind the offence. Regulation 104 is aimed at the person behind the wheel: it applies the moment the driver cannot see the road ahead, whatever the reason. Regulation 30 is aimed at the vehicle. Paragraph 1 requires a vehicle to be built so the person controlling it can always see the road and the traffic in front. Paragraph 3 covers upkeep: glass and any other transparent material on the vehicle has to be kept in a state that leaves the driver’s vision unobscured while the vehicle is being driven on a road. Both regulations came into force on 11 August 1986, and the legislation.gov.uk records show no outstanding changes to either.

The Highway Code puts the same duty in plain language. Rule 229, headed “Before you set off”, tells drivers to clear all snow and ice from every window, to keep lights clean and number plates visible and legible, to check that mirrors are clear and to demist the windows thoroughly. It also asks drivers to remove any snow that could slide off into the path of other road users and to check the planned route for delays and further severe weather. The rule lists regulation 30 among the laws behind it, alongside three further laws that cover the rest of the checklist.

The Code is the instruction manual, and the offences sit in the regulations. That split decides who writes the penalty: Parliament sets the maximums, and the courts decide each sentence on the facts of the case. The £1,000 and the 3 points belong to the driver who cannot see out, which is the offence regulation 104 describes.

What a Court Can Do About a Misted Windscreen

The Annex 5 row for failing to have a full view of the road reads three ways: a fine of up to £1,000, discretionary disqualification and 3 penalty points. The same table puts a hand-held mobile phone offence at the same £1,000 ceiling but 6 points, so a driver who sets off behind a misted screen faces half the points of one caught with a phone in hand.

Three points sound small until they are counted under how penalty points work. A driver who reaches 12 or more points within a 3-year period must be disqualified, for a minimum of 6 months, and longer for a driver who has been disqualified before. Twelve points at 3 a time is four offences of this kind inside three years. The court must order the points set by Parliament, and for every offence that carries points it also holds a discretionary power to disqualify for any period it thinks fit, usually between a week and a few months. Courts can order a retest after an offence that carries points as well.

New drivers face a tighter line. For two years from passing the first test, 6 or more points, counting any gained before the pass, revokes the licence automatically. Two offences at 3 points each reach that total: the driver must reapply for a provisional licence and drive as a learner until passing a further test.

The Button Routine Motorpoint Recommends

Custard starts with the air conditioning. His advice: “Despite being something more commonly reached for in summer, your car’s air conditioning function is a good way to keep the atmosphere inside your car dry.” He compares the effect to a dehumidifier working on the cabin air, and says the cooling button works best when it sits alongside two other controls.

The second is recirculation. Custard says: “Once your windows are closed, look for the circulation symbol, usually shown as a curved arrow inside a car outline, and make sure it’s switched off.” He explains why switching it off helps: “Leaving it on is a common mistake, but only once the air isn’t recirculating will your car go back to taking in fresh air from outside that will likely be drier, helping reduce condensation,” he continued.

The third is the dedicated demist button, which sends a blast of air at the windscreen. Custard urges drivers not to skip it, and he describes how to find it: “Drivers should be looking for a button with a picture of a windscreen and three arrows facing upwards. The button with curved windscreen is for the front, and the button with the square windscreen is for the rear,” he said. The front symbol clears the glass the driver looks through, and the rear symbol clears the back window.

He closes with the case for using all three together: “When used in combination with turning off air recirculation and switching on the A/C, this is a really effective tool to demist your car and also works well if your car starts to fog up while you’re driving.” The Highway Code backs the habit from the road side. Rule 235 on driving in fog tells drivers to use their windscreen wipers and demisters.

A heater that struggles to push air at the glass undoes the routine, so a driver with a weak flow should read the guide to a weak heater fan before the first hard frost.

A Routine to Run Before You Pull Away

The sequence starts outside the car. Rule 229 asks for every window to be cleared of snow and ice, and Rule 228 puts an ice scraper and de-icer in the winter emergency kit alongside a torch, warm clothing and a shovel. The guide on how to de-ice a windscreen covers the frozen side of the same job.

Inside, close the windows and switch recirculation off. Press the air conditioning button and the front demist button, then wait until the glass is clear across its full width and the mirrors are clear as well. The side windows and rear window count: regulation 30 speaks of all glass fitted to the vehicle, and Rule 229 speaks of all windows. A driver who wipes a small porthole in the screen with a sleeve and sets off has met neither rule and has no full view of the road under regulation 104.

Last, check the lights and number plates, which Rule 229 puts on the same checklist: lights clean, plates clearly visible and legible.

The cheapest habit is the order of controls above, run as soon as the door is shut, so the glass is clear by the time the driver is ready to move.

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Sources

• Legislation.gov.uk: The Road Vehicles (Construction and Use) Regulations 1986, regulation 104
• Legislation.gov.uk: The Road Vehicles (Construction and Use) Regulations 1986, regulation 30
• GOV.UK: The Highway Code, Annex 5. Penalties
• The Sun: Trio of buttons that defog your car’s windscreen in ‘record time’

Reviewed by Preetam Gadekar