A total of several hundred lights can be built in, and on, a car. They contribute to the driver's security as well as to his comfort. Thanks to daytime running lights, which are mandatory for new cars since the beginning of the year, the driver is seen better. In order that he himself sees better at night, new lights shine on roads alongside the headlight classic halogen: xenon and LED. They have a longer lifespan and consume less electricity. Light assistants contribute to security and comfort as well. New headlights think with the driver, sometimes even faster than him, and nightvision systems with infrared light extend his viewing range in the dark.