What is the recommended method for testing service brakes?

The recommended method for testing service brakes involves releasing the parking brake, moving forward slowly, and then applying the brakes. This method is effective because it allows the driver to assess how the brakes respond under real-world conditions while the vehicle is in motion. Observing the brake's performance while moving helps to identify any issues that may not be apparent when the vehicle is stationary, such as uneven braking or delayed response.

By conducting this test, a driver can ensure that the brakes are functioning properly and can safely stop the vehicle when needed. It also provides a comprehensive evaluation of the entire braking system, confirming that it is in good working order and capable of handling the vehicle's weight and speed.

Other methods listed may not provide a full assessment of the service brake system's functionality under driving conditions. Each approach might help identify specific issues, but the method chosen focuses on the overall effectiveness of the service brakes as they would operate in typical driving situations.