Question Parking brakes: Answers Should not be tested. Should be tested, but only after driving a distance. Should be tested before a drive. Should be tested on a hill. Explanation Parking brakes should always be checked before driving as a part of your pre-trip inspection. If the parking brakes do not hold, the vehicle is faulty and should be fixed. This questions appears in the following tests: Delaware Class B Knowledge Test Illinois Class B Knowledge Test Kansas Bus New York Class B Knowledge Test Oregon Class A Knowledge Test Oregon Passenger Pennsylvania HazMat West Virginia Tank Wisconsin Double