Are dark front window tints legal in Northern Ireland?

nidirect says you must not use a vehicle with excessively dark tint on the windscreen or windows beside the driver.

Rear passenger windows and the rear windscreen are treated differently from the front viewing area.

If buying a modified used car, do not assume an existing tint is legal simply because it passed through previous owners. Have light transmission checked if in doubt.

For most cars in Northern Ireland, at least 75% of light must pass through the front windscreen and at least 70% through the front side windows. There is no equivalent VLT limit for the rear windscreen or rear passenger windows.

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