When coupling a trailer: Do you currently have car insurance? Insurance is mandatory to drive in Virginia Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question When coupling a trailer: Answers Make sure to couple the proper glad hands. Glad hands can be connected to any other glad hands. Only one set of glad hands should be connected. Explanation When coupling, make sure you couple matching glad hands. They are often color-coded to help drivers avoid mistakes. Typically, blue is used for service lines and red is used for emergency lines. This questions appears in the following tests: Alaska Combination Arizona Combination Arkansas Combination Iowa Combination Louisiana Combination Minnesota Double Missouri Combination Nebraska Double Nevada Double Vermont Combination Virginia Combination