Do you currently have car insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance and I want to compare options. Before you start the test, please answer the following question regarding your insurance status. Without insurance you will not be able to drive in California 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. Take a FREE Practice Test Now This questions appears in the following tests: District Of Columbia Knowledge Test Class A , Connecticut Knowledge Test Class B , Maryland Knowledge Test Class B , Oregon Knowledge Test Class B , Delaware Air Brakes , Nevada Air Brakes , New York Air Brakes , Pennsylvania Air Brakes ,