Standard headlights shine straight ahead, no matter how the car is moving. More recently, headlights can react to steering, speed, and the slope of the road, to automatically adjust the lighting for the way ahead. This ensures drivers – and other road users – see more of the road, which can reduce injuries and deaths.
Static automatic-levelling, or self-levelling, headlights have a sensor that measures the tilt of the car relative to the road – such as when the car is heavily loaded. LED and XENON lights always have static automatic levelling, halogen lamps have manual levelling.
Cornering and dynamic bending lights adapt the direction of the light to the road ahead: When the car turns right, the lights illuminate to the right. When the car turns left, the lights illuminate to the left. This offers up to 90% more visibility in curves and intersections.
There are two commonly used systems:
Technical advances have been made in recent years to develop Advanced Front Lighting Systems. These are normally xenon or LED lamps that are automatically controlled to provide the right amount of light where it is needed on the road ahead.