- How does a head-up display work?
- Do I need it in my car?
- Parkers explains the tech
Designed to reduce the driver’s need to take their eyes off the road, a head-up display (HUD) is a driver aid which works by projecting vehicle information (such as speed and sat-nav instructions) onto the windscreen, just below the driver's natural line of sight.
How does a head-up display work?
Typically, head-up displays work like a projector, beaming a digital display onto either the car’s windscreen or a dedicated piece of glass or plastic that pops out on top of the dashboard. Information that can be displayed is often customisable, but usually includes sat-nav instructions, current speed and speed limit alert.
Do I need it?
It’s not essential as the same information can always be displayed on either the dials or central multimedia screen. It’s almost always an optional extra, so decide whether you really need it before spending the extra cash.