Drivers issued new warning by DVSA as 'surveillance stepped up'

It is linked to new research published on Wednesday

Brighter headlights are more likely to cause glare for drivers of oncoming vehicles, according to a Government-commissioned study. The research, conducted by consultancy TRL, suggests that vehicle lighting is a "genuine issue".

The study involved more than 50 hours of night-time road testing with a car equipped with a camera to detect headlight luminance – the amount of light emitted – and other sensors. Observers in the car were more likely to report experiencing glare from the headlights of oncoming vehicles when higher luminance was recorded.

Other factors resulting in increased glare included instances when the observers' car was travelling uphill or around a right-hand bend, as a driver's eyes are more likely to fall within the so