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

The use of speed control, or cruise control, is recommended when traffic conditions allow for consistent driving without frequent stops or changes in speed. This means it's safe to maintain a steady pace, which helps reduce driver fatigue and promotes fuel efficiency.

Regarding upward or downward slopes, while it's true that cruise control can be beneficial on these terrains, it's crucial to recognize that it should not be used exclusively for such conditions. Drivers should be cautious when using cruise control in hilly areas since it may lead to unintended acceleration going downhill or insufficient power going uphill.

Lastly, cruise control isn't limited to high-speed driving; it can also be employed at lower speeds where conditions permit. However, it should always be disengaged in heavy traffic, inclement weather, or when driving through construction zones or other areas requiring constant attention.

Understanding these nuances ensures compliance with German traffic regulations and enhances overall road safety.