Question If the spring brakes are activated, you should never: Answers Push down the brake pedal. Open the hood. Release air from the air storage tanks. Open the door to the cab. Explanation Never apply the brake pedal if your spring breaks are activated. Brakes can be damaged if they are subject to both springs and air pressure. Take a FREE Practice Test Now This questions appears in the following tests: Alabama Knowledge Test Class A , Colorado Knowledge Test Class A , South Dakota Knowledge Test Class B , Connecticut Double , North Dakota Tank , Georgia Air Brakes , Kansas Air Brakes , Utah Air Brakes ,