Question The air storage tanks: Answers Hold only enough air for one braking cycle. Hold enough air for brakes to be used several times if the compressor stops working. Do not hold air unless there is an emergency. Hold enough air for more than 1,000 braking cycles. Explanation In an air brake system, the air storage tanks hold enough air for brakes to be used several times if the compressor stops working. This questions appears in the following tests: Colorado Class B Knowledge Test Colorado Double Colorado Air Brakes District Of Columbia Air Brakes District Of Columbia Air Brakes Florida Air Brakes Florida Air Brakes Illinois Air Brakes Kansas Class A Knowledge Test Kansas Air Brakes Montana Air Brakes Nevada Air Brakes New Jersey Air Brakes North Carolina Class A Knowledge Test North Dakota Class B Knowledge Test North Dakota Tank North Dakota Passenger North Dakota Air Brakes Pennsylvania Class A Knowledge Test Pennsylvania Class B Knowledge Test South Carolina Class B Knowledge Test Tennessee Passenger Texas Air Brakes West Virginia Class B Knowledge Test