When should the speed control (cruise control) be used?

Cruise control should be used when traffic conditions allow you to maintain a steady, constant speed without frequent acceleration or braking. This helps improve fuel efficiency and reduces driver fatigue on long, clear stretches of road. It is not intended for use on steep slopes or in heavy traffic, where speed often needs to be adjusted. Also, it can be used at various speeds, not only at high speeds, as long as it is safe and appropriate. Understanding this helps you use cruise control effectively and safely according to German traffic rules.