A bright light mounted on the front of a vehicle to illuminate the road ahead during dark conditions. Essential safety equipment for nighttime driving.
Compound word from 'head' (front part) and 'light'. The term emerged with early automobiles in the late 19th century, adapting from earlier uses on trains and ships.
Early automobile headlights were actually acetylene gas flames in glass enclosures, making nighttime driving quite literally a 'bright idea' fraught with fire risk. The shift to electric headlights revolutionized not just safety but the entire concept of when and how far people could travel.
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