A vehicle inspection is required: Question A vehicle inspection is required: Answers For insurance purposes. To get fuel. By state and federal law. Explanation Federal and state laws require that CMV drivers inspect their vehicles before every trip. This questions appears in the following tests: Arkansas Class A Knowledge Test District Of Columbia Class A Knowledge Test District Of Columbia Double Maryland Class B Knowledge Test Nevada Passenger New Hampshire Class A Knowledge Test North Dakota Class B Knowledge Test South Carolina Class A Knowledge Test West Virginia Tank