HID is an acronym for High Intensity Discharge, a phenomenon in which high amount of light is emitted by the electrical discharge of gases. This emitted light is three times more luminous than the one emitted by ordinary incandescent or halogen light. HID has revolutionized the night time driving by greatly increasing the visibility on roads at night keeping in view the fact that 60 % of road accidents at night occur only due to less visibility.


Gas discharge light is generated by sending sudden and momentary electric current between two objects of different potential through Plasma i.e. and ionized gas. These lights use some noble gas like xenon, krypton, neon, argon or a mixture of these gases.

HID is also a gas discharged light in which an electric arc embedded between tungsten electrodes is placed in a transparent arc tube produces light. This arc tube contains metal salts and gas. Gas is mainly responsible for initially striking the arc, and once it is started, heating and evaporation of salts produces plasma which enhances the intensity of the light produced by the arc. It also consumes very less power.


High Intensity Discharge Bulbs are different from halogen in basic chemistry and functioning. HID Bulbs are also much superior to halogen bulbs. They produce high intensity bright light that works efficiently in the worst driving conditions. You do not need to worry about driving in heavy fog with HID bulbs installed in your car’s headlights. Filament used in halogen bulbs is not used in these bulbs. They produce light through creating an electric arc instead of using heat-oriented light emission. Consumption of power and intense bright white light emitted by HID bulbs is in no way comparable to the yellowish light of halogen bulbs. Halogen bulbs have a lifetime of about 1000 hours, while HID lamps are a lifetime solution for headlights having lifetime period more than four times that of halogen light.