Driving in Rain, Fog, and Bad Weather: UK Safety Guide

Summary

• Rain: Double your following distance. Slow down. Watch for standing water and aquaplaning.
• Fog: Use dipped headlights. Only use fog lights below 100m visibility. Don't use full beam.
• Ice and snow: Gentle inputs on steering, brakes, and accelerator. Leave 10x normal stopping distance.
• Strong winds: Watch for high-sided vehicles. Grip the wheel firmly. Be ready for gusts on exposed roads.

British weather is unpredictable. One minute it's sunny, the next you're driving through a monsoon.

Bad weather causes around 10% of all road accidents in the UK. Rain, fog, ice, and strong winds all create hazards that catch drivers out.

This guide covers how to drive safely in every type of weather you'll encounter on UK roads.

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Driving in Rain

Rain is the most common bad weather condition in the UK. It reduces visibility, increases stopping distances, and can cause aquaplaning.

Key Tips for Wet Roads

• Slow down: Stopping distances are at least double in the wet
• Increase following distance: Use the 4-second rule instead of 2 seconds
• Use dipped headlights: Even in daylight, they help others see you
• Avoid standing water: Deep puddles can stall your engine or hide potholes
• Brake gently: Harsh braking can lock wheels on wet roads

Aquaplaning

Aquaplaning happens when water builds up between your tyres and the road. The car "floats" and you lose steering and braking control.

If you feel the steering go light and the engine rev rise:

1. Ease off the accelerator - don't brake suddenly
2. Hold the steering wheel straight
3. Wait for the tyres to regain grip

Prevent aquaplaning by:

• Keeping tyres properly inflated with good tread depth (at least 3mm is recommended for wet conditions)
• Slowing down in heavy rain
• Avoiding deep standing water

After Heavy Rain

• Test your brakes gently after driving through water
• Watch for debris washed onto the road
• Be aware of flooded roads - if you can't see the bottom, don't risk it

Important: If flood water reaches above the bottom of your doors, turn around. Driving through deep water can cause serious engine damage and is dangerous.

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Driving in Fog

Fog dramatically reduces visibility and makes it hard to judge speed and distance. It's one of the most dangerous driving conditions.

Fog Light Rules

Light Type	When to Use
Dipped headlights	Always in fog or poor visibility
Front fog lights	Optional when visibility is reduced
Rear fog lights	Only when visibility is below 100m (about 10 car lengths)
Full beam	Never in fog - it reflects back and makes things worse

You must turn off rear fog lights when visibility improves. They dazzle drivers behind you and can mask your brake lights.

Safe Fog Driving

• Slow down - you need to be able to stop within the distance you can see
• Use dipped headlights, not full beam
• Keep a safe distance from the car ahead
• Use the left-hand edge of the road or cat's eyes as a guide
• Listen for traffic you can't see (open your window at junctions)
• Don't hang on to the tail lights of the car in front - it gives false confidence

At Junctions in Fog

• Wind down your window and listen for approaching traffic
• Edge out slowly and look carefully both ways
• Be ready to stop if a vehicle appears suddenly

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Driving in Ice and Snow

Ice and snow are the most treacherous conditions. Even experienced drivers can get caught out.

Before You Set Off

• Clear all windows and mirrors completely - a peephole isn't enough
• Clear snow from the roof (it can slide onto your windscreen or hit cars behind)
• Check your wipers aren't frozen to the screen
• Make sure lights are clear of snow and ice
• Consider whether the journey is essential

Driving on Ice and Snow

• Gentle inputs: Accelerate, brake, and steer smoothly and gently
• Lower gears: Use second gear to pull away and reduce wheelspin
• Increase distance: Leave up to 10 times the normal gap
• Brake early: Squeeze the brake pedal gently; don't stamp on it
• Watch for black ice: Invisible ice on the road, common in shaded areas and on bridges

If You Skid

• Front-wheel skid (understeer): Ease off the accelerator. Don't brake. The front tyres will regain grip.
• Rear-wheel skid (oversteer): Steer gently in the direction you want to go. Ease off the accelerator.

ABS and stability control help, but they can't perform miracles on ice. Drive as if you don't have them.

For more winter tips, see our winter driving safety guide.

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Driving in Strong Winds

High winds can affect your car's handling, especially on exposed roads, bridges, and when passing large vehicles.

Wind Safety Tips

• Grip the wheel firmly: Be ready for sudden gusts
• Watch for high-sided vehicles: Lorries and vans can swerve or tip over
• Give cyclists and motorcyclists extra room: They're vulnerable to being blown around
• Be cautious on exposed roads: Bridges, hilltops, and open countryside are worst
• Watch for debris: Branches, bins, and other objects can blow into the road

Overtaking in Wind

When overtaking a large vehicle in strong winds, you may experience:

1. Shelter from the wind as you draw alongside
2. A sudden gust as you pass the front of the vehicle

Grip the wheel firmly and be ready to correct your steering.

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Driving in Bright Sun

Sun glare, especially in winter when the sun is low, can temporarily blind you.

• Keep sunglasses in your car
• Use your sun visors
• Keep your windscreen clean inside and out
• Slow down if you can't see clearly
• Increase your following distance

Tip: A dirty windscreen makes sun glare much worse. Clean it regularly, including the inside.

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When to Stay Home

Sometimes the safest decision is not to drive at all. Consider staying home if:

• Severe weather warnings are in place (Met Office red or amber warnings)
• Roads are closed or flooding is reported
• Visibility is extremely poor
• Your journey isn't essential
• Your car isn't suitable for the conditions (e.g., summer tyres in snow)

No meeting or appointment is worth risking your life.

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Emergency Kit for Bad Weather

Keep these items in your car during autumn and winter:

• Ice scraper and de-icer
• Torch with spare batteries
• Warm blanket or sleeping bag
• High-vis jacket
• Boots or sturdy shoes
• Phone charger (in-car or power bank)
• Snacks and water
• First aid kit
• Jump leads
• Shovel (for snow)

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Common Questions

When should I use fog lights?

Use front fog lights when visibility is seriously reduced. Use rear fog lights only when visibility falls below 100 metres. You must switch them off when visibility improves.

How do I know if roads are icy?

Your car's temperature display can help - ice is likely below 3°C. Also look for frost on grass, parked cars, and roofs. Roads in shadow and bridges freeze first.

Is it legal to drive with snow on my roof?

There's no specific law, but if snow slides onto your windscreen or flies off and hits another car, you could be prosecuted for driving without due care. Clear your roof.

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Final Thoughts

Bad weather demands extra concentration, slower speeds, and bigger gaps. Don't be afraid to delay or cancel a journey if conditions are too dangerous.

The key to safe driving in any weather is adjusting your driving to the conditions. Slow down, stay alert, and arrive alive.

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