Blinded by the light
The rules
The Highway Code’s Rule 237 advises drivers to slow down or stop if they are blinded by bright sunlight and suggests wearing sunglasses for protection while driving. However, it’s important for drivers to be aware that not all sunglasses are suitable, as some tint levels may render them unsafe for driving.
All sunglasses sold in Britain must display a category number marking and label, which helps motorists select the right type for safe driving according to their tint levels. This scale ranges from zero to four, indicating the strength of the tint and the appropriate times of day for wearing them behind the wheel. By using these labels, drivers can ensure that their sunglasses are both legal and suitable for driving in various lighting conditions.
Possible charges/fines
According to Birmingham Live, sunglasses are labeled in four categories to indicate their suitability for road use. The average pair of sunglasses is ‘category two,’ making them appropriate for driving. However, darker sunglasses labeled ‘category four,’ small fashion glasses, yellow-tinted glasses, or those with large side arms can be considered too dangerous for driving.
“Drivers wearing inappropriate sunglasses could face a dangerous driving charge, which may result in hefty fines, penalty points, or even prison time. If you are blinded by sunlight and it becomes too bright and hazardous to drive, be sure to slow down or pull over until it is safe to continue. It’s not worth taking the risk.”





