Why do large vehicles use air brakes? Before you start the test, please answer the question below regarding your insurance status. Without insurance you will not be able to drive in Ohio 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. Question Why do large vehicles use air brakes? Answers Other brake systems squeak too loudly. Air braking systems are very effective. Air brakes are complicated. Air is free. Explanation Air brakes are an effective and safe way of stopping large and heavy vehicles, as long as they are maintained and used properly. This questions appears in the following tests: Minnesota Class A Knowledge Test Minnesota Air Brakes Oregon Air Brakes
