If a parked trailer does not have spring brakes, you should keep the trailer from moving by: Before you start the test, please answer the question below regarding your insurance status. Without insurance you will not be able to drive in North dakota Do you currently have motorcycle insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance. Click here to compare rates from our insurance partner. Question If a parked trailer does not have spring brakes, you should keep the trailer from moving by: Answers Having the vehicle parked against a wall or other vehicle. Using chock blocks. Parking on a slight incline. Explanation If a parked trailer does not have spring brakes, wheel chocks should be used to prevent it from moving. This questions appears in the following tests: Arizona Combination Iowa Tank Iowa Combination Kentucky Combination Louisiana Combination Minnesota Combination Missouri Combination New Mexico Combination Rhode Island Combination Rhode Island Combination