Drivers in England warned to check summer apparel or face £5,000 fines

Experts have said your sunglasses might be stronger than you think - and making driving harder - in a pre-summer warning. Motorists are being cautioned that they could face a hefty £5,000 fine for breaching a lesser-known rule as the weather brightens up.

Drivers have been advised to ensure their sunglasses meet legal requirements before hitting the road. Driving experts at have issued a warning to all UK drivers to make sure their sunglasses are legally categorised to cope with the intense sunlight.

According to Rule 237 of the Highway Code, drivers should reduce speed or pull over if blinded by bright sunlight - hence, it's crucial for drivers to wear sunglasses for protection while on the move.

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However, drivers should also be mindful that certain sunglasses may be deemed unsuitable depending on their tint level. All sunglasses in the UK must carry a category number, which can assist drivers in determining if they're safe for use while driving.

Sunglasses are graded from zero to four, indicating their strength and the time of day they can be safely worn. Most standard sunglasses will be labelled 'category two' - these have a mild tint and allow 18 per cent - 43 per cent of light through, making them suitable for daytime driving.

Sunglasses ranked as 'category four' have a very dark tint and only let through 3 per cent - 8 per cent of light, making them unsuitable for driving. These sunglasses should also, by law, carry a label stating they are not suitable for driving and road use.

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Motorists must also ensure any sunglasses with wide side arms don't block too much of their peripheral vision, or they will be unsuitable for driving.

Small fashion and yellow tinted glasses should also be avoided as they're often designed as an accessory, so do not provide appropriate protection from the sun rays for drivers.

Driving with inappropriate eyewear could be detrimental to pedestrians and other road users as it could leave drivers unable to detect dangers on the road.