While driving, you use the adaptive cruise control (ACC). The speed is set to 100 km/h. What must you be prepared for before entering a bend in the road?

Your answer is correct because when using adaptive cruise control (ACC) on German roads, especially before entering a bend, two important rules apply:

First, the ACC may sometimes increase your speed to maintain the set speed or close the gap to a vehicle ahead if conditions allow. This means you cannot rely solely on the ACC to adjust speed appropriately just because you are approaching a curve.

Second, you must always be ready to manually adjust your speed to the traffic situation and road conditions. Bends require reduced speed for safety and vehicle control, and the ACC might not recognize this need automatically.

The third option is incorrect because the ACC does not actively prompt or warn you to reduce speed before bends. It adjusts automatically based on traffic but does not guarantee safe bending speeds.

In summary, when approaching curves while using ACC, always be aware that you might need to intervene by reducing speed yourself to ensure safe driving. This is a key aspect of responsible use of ACC according to German traffic rules.