What is the main purpose of the service brake?

The service brake is primarily designed for normal stopping operations during regular driving conditions. This braking system is engaged when a driver applies the brake pedal to slow down or stop the vehicle under ordinary circumstances. It is the main system that a driver uses routinely to control the speed and ensure the safe stopping of the vehicle in day-to-day driving situations.

While other braking systems, such as the emergency brake, have specific functions for critical situations, and features like holding the vehicle in place or stabilizing a trailer may be related to the overall braking system, they do not represent the primary function of the service brake. The service brake's effectiveness and proper functioning are crucial for safe operation on the road, making it an essential component in the braking system of any vehicle.