What is the purpose of an adaptive cruise control system (ACC) in motor vehicles?

The adaptive cruise control system (ACC) is designed to enhance driving comfort and safety. The correct combination of functions it offers includes:

1. It can independently accelerate the vehicle to reach a previously set speed, which allows drivers to maintain a consistent speed on highways without constant adjustments.

2. It can also slow down the vehicle if it detects another vehicle ahead traveling at a lower speed. This feature is crucial for maintaining a safe following distance and preventing collisions.

3. While you didn't select the option about maintaining prescribed safety distances, this function is implicitly part of the ACC system. The technology works by adjusting the speed of your vehicle to ensure a safe distance from the vehicle in front, which is important in adhering to traffic safety laws.

According to German traffic regulations, it is essential for vehicles to maintain a safe distance from each other to avoid accidents. Accurately understanding all elements of ACC not only enhances comfort but also ensures compliance with road safety requirements.