Question Both systems in a dual air brake systems share: Answers Air tanks. Hoses. Air lines. An air compressor. Explanation Both systems in a dual air brake system share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly. Take a FREE Practice Test Now This questions appears in the following tests: Wisconsin Double , Florida Air Brakes , Kansas Air Brakes , Nebraska Air Brakes , South Dakota Air Brakes ,