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Automotive glossary

Head-up Display (HUD)

A head-up display projects information like speed and navigation into the driver's field of view.

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What is Head-up Display (HUD)?

It uses the windscreen or a small screen. Augmented reality versions overlay graphics. Brightness adjusts automatically. The image appears to float some distance in front of the car, so the driver's eyes need less refocusing between the road and the information. Windscreens for HUD cars have a special wedge-shaped interlayer that prevents double images, which is why ordinary glass is not suitable.

How it works

A projector reflects images off the glass.

Why it matters for your car

Replacement windscreens must be HUD-compatible. Polarised sunglasses may affect visibility.

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