If the service brake system is functioning correctly, what should you expect when pressing the brake pedal?

When pressing the brake pedal in a vehicle with a properly functioning service brake system, you should expect the brakes to apply smoothly. This indicates that the braking system is effectively transmitting the driver's input through the brake pedal to the brake components, allowing for a gradual deceleration of the vehicle. A smooth application helps maintain control and allows the driver to adjust the braking force as needed, contributing to both safety and comfort during the braking process.

The expectation of smoothness emphasizes the importance of a well-maintained air brake system, which should avoid any abrupt or harsh engagement that could lead to loss of control or discomfort. By pressing the brake pedal, drivers should feel an equal and consistent response, ensuring that the vehicle slows down in a predictable manner, which is crucial for effective driving, especially in varying traffic conditions.