RAC explains sunglasses law in new alert as one category 'illegal'

NewsUK NewsWales weatherDrivers might not be aware of the rules06:37, 30 Jul 2026Updated 06:41, 30 Jul 2026Motorists who wear sunglasses that are too dark are being warned that they could be breaking the law. The warning comes as the UK faces its fourth summer heatwave.‌While having a good pair of sunglasses to wear while driving is essential to staying safe with the sun so fierce, sunglasses rated at the highest level on the Visible Light Transmission scale can actually impair vision while driving. This refers to shades in ‘category four’ which only let in a very small percentage of daylight.‌The category can be found on the label of the packaging. Additionally, some tinted glasses may be unsuitable for driving as they can make it difficult to see in low light situations, which drivers co