West Cork Gardaí have been using a special electronic photometer that measures how much light is getting through a tinted window.
The law surrounding tinting is fairly simple - a vehicle’s windscreen and front side windows must have a light transmission or transparency level of at least 65 per cent, meaning that tints are allowed to stop up to 35 per cent of the light getting through.
On top of this, the driver must always have a view of the front and side of the vehicle to ensure safety while driving, CorkBeo reports.