What is an ADAS Windscreen?
Windscreen with a forward-facing camera for lane assist, emergency braking and adaptive cruise.
Simplified animation — not to scale.
In plain English
Many modern cars have a camera mounted behind the windscreen that powers driver-assistance features (ADAS) — lane-keep assist, autonomous emergency braking, adaptive cruise control, traffic-sign recognition and more. After a windscreen replacement, that camera almost always needs recalibrating to manufacturer standards.
"Like swapping the lenses on a pair of glasses — even a tiny shift means everything is slightly out of focus until they're re-aligned."
How it works
Calibration uses either a static set-up in the workshop (with targets and lasers) or a dynamic drive on marked roads, often a combination of both. Skip calibration and the safety systems can mis-read the road — lane lines drift, emergency braking misfires, cruise control reads the wrong distance.
Signs of trouble
- ⚠Lane-keep, AEB or cruise warnings on the dash after a windscreen change
- ⚠Adaptive cruise braking too late or too early
- ⚠Lane-keep tugging the wheel for no reason
- ⚠Traffic-sign display showing wrong limits
£650–£1,600
Always get a written quote. Prices vary by car, region, and parts brand.