What is the purpose of cruise control?

The purpose of cruise control is to maintain a steady speed without the need for the driver to continuously apply pressure on the accelerator pedal. This feature allows drivers to relax their foot during long trips or on highways, enhancing comfort and reducing fatigue. By setting a specific speed, the system automatically adjusts throttle input to keep the vehicle moving at that set speed, provided that the road conditions allow for it. This system can be especially beneficial on long stretches of open road where constant speed maintenance is possible and effective.

The other options describe functions not associated with cruise control. For example, rapidly increasing speed is typically managed by the driver manually pressing the accelerator, while assistance with steering and navigating curves is not a function of cruise control, which is focused solely on speed maintenance. Additionally, while cruise control may contribute to overall fuel efficiency by maintaining a constant speed, its primary function is not to minimize stops or save fuel directly.