Question An application pressure gauge shows: Answers How much air pressure is being applied to the brakes. How much air pressure is available. How much air pressure is required to stop a vehicle. Explanation If a vehicle is equipped, an application pressure gauge shows how much air pressure is being applied to the brakes. This gauge can help a driver identify if their brakes are beginning to fade. Take a FREE Practice Test Now This questions appears in the following tests: Oklahoma Knowledge Test Class A , California Knowledge Test Class B , Virginia Knowledge Test Class B , Delaware Air Brakes , Maine Air Brakes , Michigan Air Brakes , Ohio Air Brakes , Rhode Island Air Brakes ,