Do you currently have car insurance? Insurance is mandatory to drive in California Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Glad hands are: Answers Coupling devices. Happy passengers. Eager mechanics. Pleased drivers. Explanation On trailers with air brakes, glad hands are coupling devices used to connect the air lines of the tractor to those of the trailer. Take a FREE Practice Test Now This questions appears in the following tests: Massachusetts Double , Maryland Combination , Utah Combination ,