The DISTRONIC Distance Assist can support a motorist by automatically progressing a protected travelling stretch to a car forward during above 20 km/h. A radar sensor in a front fender provides a required data. The complement can also detect line changes or braking manoeuvres by other highway users and can conflict immediately. In an emergency, a active stretch support is means to stop a Sprinter down to a standstill. The car provides both visible and acoustic warnings when a complement determines that stronger braking is necessary. If a collision is imminent, a Active Brake Assist could also meddle and try to forestall an accident.