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Wearing the wrong type of sunglasses while driving is illegal - but you could also be fined for NOT wearing them at all.

 Drivers could be fined as much as £2,500 for wearing sunglasses at the wheel.

But did you know motorists could also be fined for NOT wearing sunglasses while driving?

The offence means an on-the-spot fine of £100 and up to three penalty points on your licence - or motorists could go to court and face a fine of up to £2,500 and nine penalty points.

It is illegal to wear certain types of sunglasses while driving dependent on their strength.

Sunglasses are divided into four categories based on how much light they filter out.

Most sunglasses will be category two - meaning they filter between 18-43% of light and are suitable for driving.

But if you have category four sunglasses - which let less than 8% of light through - they are illegal when driving.

In the UK sunglasses must be labelled and show the filter category number and category four should be labelled ‘not suitable for driving and road use’.

 Variable tint lens sunglasses are also not suitable for driving. The tint on these glasses becomes darker when exposed to sunlight, but modern car windscreen glass filters out UV rays and means they won’t work.

According to the AA: “Filter category four lenses only transmit between 3-8% of light and are not suitable for driving at any time.”

Source: Chronicle Live