Question When looking under your vehicle's hood during a pre-trip inspection, you should: Answers Use the parking brakes and/or chock blocks. Leave the vehicle in a low gear. Remove the battery. Disconnect the radiator. Explanation Before inspecting under a vehicle's hood, make sure the parking brake is engaged and/or the wheels are properly chocked. This questions appears in the following tests: Illinois Class A Knowledge Test Minnesota HazMat Montana Tank New Jersey Class A Knowledge Test North Carolina Class A Knowledge Test North Dakota Class B Knowledge Test Pennsylvania Class B Knowledge Test South Dakota Class B Knowledge Test