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100 Greatest Innovations
Lights

Brake lights
Brake lights
Sometimes it's the simplest things that are the most effective: brake lights instantly indicate that the car ahead is slowing down or stopping, giving you a chance to hit your own brakes and avoid rear-ending it. So-called 'third brake lights', high mounted at the base of the rear windscreen, made their debut in the mid-70s and LED brake lights that illuminate with increasing intensity according to the force of deceleration are now appearing.


indicators
Indicators
Optional in certain German executive cars, say the snide. A simple but effective way of signaling your intentions, if you use them: today's large flashing blinkers have to be a better bet than slightly obscene-looking hand signals or fold-out trafficators.

First seen in Buick models of 1938, now seen with mirror-mounted repeater lights, LEDs in place of bulbs and clear-lensed glass covers.

Rear foglight
A high proportion of accidents are rear-enders and many of these happen in poor visibility.

Enter the brightly-glowing rear foglight, designed to cut through the gloom. Hit the brakes on a congested, misty motorway and you can have some confidence the car behind will see you. Just don't leave it on all the time.

Reversing light
Another one for the so-obvious-it-hurts list: a white light to show other road-users that you have selected reverse gear. And that you might wish to go backwards at some point.

Shame it's almost universally ignored by most rush-hour rat-runners down residential streets, who fail to realise that the locals might actually want to park their cars near their houses, then hit the horn. Grrr.

Xenon
Xenon headlamps
High-intensity, or gas-discharge, headlamps create illumination from the vapour produced by pressurizing a volatile gas between electrodes. It's a similar principle to street lamps and floodlights – but in car headlamps, the use of xenon, instead of sodium or mercury, is particularly effective for night-time visibility. Just remember to dip those searing full-beam lights if there's another car coming towards you.

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