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 When leaving your vehicle, you should: Answers Apply the parking brake. Apply the air brakes. Not apply any brake. Disconnect the trailer. Explanation You should always apply the parking brake when leaving your vehicle. Take a FREE Practice Test Now This questions appears in the following tests: Arkansas Knowledge Test Class B , West Virginia Knowledge Test Class B , Mississippi HazMat ,