Question In a dual air brake system: Answers Air tanks are shared between both systems. Each system has its own air tanks. You must designate which system you are using. Explanation There are two air brake systems in a dual air brake system. The systems share a set of brake controls, but each system has its own tanks, hoses, and lines. Take a FREE Practice Test Now This questions appears in the following tests: Hawaii Knowledge Test Class A , New Mexico Knowledge Test Class B , Michigan Air Brakes , Nebraska Air Brakes , Oklahoma Air Brakes , Washington Air Brakes , Wisconsin Air Brakes ,