In a dual air brake system: 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. This questions appears in the following tests: Alabama Air Brakes Alaska Class A Knowledge Test Delaware Class B Knowledge Test Hawaii Double Hawaii Air Brakes Idaho Double Iowa Air Brakes Iowa Air Brakes Kentucky Class A Knowledge Test Kentucky Class A Knowledge Test Kentucky Air Brakes Louisiana Bus Louisiana Double Maine Air Brakes Mississippi Class A Knowledge Test Montana Class A Knowledge Test Montana Air Brakes Ohio Class A Knowledge Test Ohio Class B Knowledge Test Rhode Island Class A Knowledge Test Rhode Island Class B Knowledge Test Tennessee Air Brakes Utah Air Brakes Washington Class B Knowledge Test Washington Double Wisconsin Air Brakes