Do you currently have car 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. Before you start the test, please answer the following question regarding your insurance status. Without insurance you will not be able to drive in California Question Blocking a load: Answers Is dangerous and should never be done. Helps to stabilize the load. Is only done with liquid cargo. Explanation Blocking and bracing are used to prevent cargo from shifting in transit. Take a FREE Practice Test Now This questions appears in the following tests: Oklahoma Knowledge Test Class B , Tennessee Knowledge Test Class B , Mississippi Tank , Idaho Passenger ,