An alcohol evaporator in an air brake system: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question An alcohol evaporator in an air brake system: Answers Makes the brakes work without squeaking. Prevents ice from forming in the braking system. Lubricates parts of the braking system. Explanation Some air brake systems include an evaporator that introduces alcohol into the system. The alcohol can help prevent ice from forming within the system. This questions appears in the following tests: Arkansas Class B Knowledge Test Connecticut Class B Knowledge Test Delaware Air Brakes Idaho Air Brakes Louisiana Class A Knowledge Test Louisiana Class B Knowledge Test Maine Class B Knowledge Test Maine Air Brakes Michigan Class A Knowledge Test Missouri Air Brakes New Mexico Class A Knowledge Test Ohio Class B Knowledge Test Oklahoma Air Brakes Washington Air Brakes Wyoming Class A Knowledge Test