LED taillights are innovative brake lights and taillights that use long-lasting LED light sources. Light bulbs are made of diodes and have a higher brightness than ordinary light bulbs and they respond faster. LED (Light-Emitting-Diode in Chinese) is a semiconductor that converts electrical energy into visible light. It changes the principle of the tungsten filament of an incandescent lamp and the light emission of three primary colors of an energy-saving lamp, and uses electric field emission. It can signal other vehicles and pedestrians as the car brakes, turns or turns. The LED taillights have excellent light source intensity and maintain high visibility even in fog.