Once cargo is secured onto a vehicle: Question Once cargo is secured onto a vehicle: Answers You do not need to inspect the cargo. You should not let others inspect the cargo. You should check the cargo every 150 miles. Explanation The securement of cargo must be checked before beginning a trip, within the first 50 miles of a trip, and then again every three hours or 150 miles thereafter. This questions appears in the following tests: Arizona Class B Knowledge Test Connecticut Passenger Kentucky Double Missouri Class A Knowledge Test New Mexico Double Oklahoma Class B Knowledge Test Tennessee Class B Knowledge Test