Have you ever wondered what are HID headlights? In this segment we’ll focus in on exactly what HID headlights are and how they are different from other types of headlights on the market today. HID stands for high intensity discharge. The great thing about HID headlights is that they produce more light at much lower power consumption when compared to halogen light bulbs. HID bulbs work by vaporizing metallic salts in the presence of xenon gas. Similar technology is used mercury vapor street lamps. The main difference is that argon gas is used in street lamps causing the light output to increase very slowly. It is the xenon gas that allows the HID bulbs to produce high light output immediately and increase the light output as the headlight comes to full temperature.