What is excessively tinted glass?
Road Vehicles (Construction and Use) Regulations 1986 as amended specify the minimum
levels of light that must pass through the windscreen and front side windows.
The limits are:
Motor Vehicles first used before 1 April 1985: The windscreen and front side windows
must allow at least 70% of light to be transmitted through them.
Motor Vehicles first used on or after 1 April 1985: The light transmitted through
the windscreen must be at least 75%.
The front side windows must allow at least 70% of the light to be transmitted through
If the glass is tinted to a point whereby it lets through less light, then the vehicle
does not meet the legal requirements.
Which windows in the vehicle does this apply to?
The windscreen and the front side windows to either side of the drivers' head.
How does excessively tinted glass affect road safety?
It restricts the drivers' vision, especially in dark conditions. This may prevent
drivers from seeing other road users or pedestrians.
It also prevents other road users and pedestrians from confirming through eye contact
that they have been seen.
What is the purpose of the law?
The purpose of the the law is to ensure the drivers' ability to see the road is not
excessively restricted by glass tint.
Legally where do I stand?
If you are the driver:
You must not drive a vehicle on the road with the windscreen or front side windows
You may also invalidate your insurance with this modification, particularly as the
vehicle is likely to be illegal.
If you're selling a vehicle with extra tinting applied to the windscreen or front
The vehicle may now have glass that is darker than permitted by Construction and
Use Regulations, in which case the vehicle should not be sold.
Why are tinted windows not included in the MOT test?
Excessively tinted glass is seen as a serious issue but one which currently affects
only a small number of the 24 million vehicles tested annually.
To include this item in the MOT test would require all 18,000 garages to incur expenditure
on special test equipment and the time taken to carry out an MOT would increase.
The MOT fee would have to be raised to cover the extra time and investment.
This extra cost would affect all motorists - all for a small number of vehicles.
With the current levels of offending, roadside enforcement is a better route as it
targets the offenders while minimising the cost and inconvenience to compliant road
Is this a nationwide campaign?
Yes. VOSA staff throughout the country have been issued with testing equipment.
If the equipment is not available, a subjective assessment will be carried out.
If the vehicle is considered dangerous to drive then an immediate prohibition may