High Intensity Discharge (HID) is a new type of lighting technology that replaces the old halogen gas bulbs that use a heated tungsten filament. HID lamps operate more like vapor filled streetlights. They don't have a filament but create light by zapping an arc between two electrodes. That arc excites a different kind of gas usually Xenon, which in turn ignites metallic salts. The light produced by an HID Xenon lighting system is greater than a standard halogen bulb and with less power consumption. On the road, HID Xenon lighting systems appear as a bright white beam which resembles natural daylight. The bright white beam offers greater visibility and road safety. HID systems are now found in luxury equipped cars such as the top of the line BMW, Lexus and Mercedes systems.