High intensity headlights dazzle drivers

The growing popularity of vehicles with high intensity headlights could lead to increasing problems for drivers.

Geoff Roberson, professional adviser for the Association of Optometrists, said high intensity discharge (HID), or bi-xenon headlights, which can be up to three times brighter than halogen headlights, cause increased headlight glare for other drivers.

'It's a balancing act around light contrast. Ironically, what is good for the driver who has HID headlights, better illumination of the road ahead, is not so good for other road users because of increased glare problems,' he said. Roberson explained that a driver who is dazzled by HID headlights may be distracted, experience discomfort or not see as well. 'The increased glare means that drivers may find it more difficult to see pedestrians and cyclists on the road,' he added.