Question Seat belts must be used by: Answers Only the driver. Only adult passengers. Only child passengers. All of a vehicle's occupants. Explanation Be sure that seat belts are clean, in good condition, and available to all of your vehicle's occupants. In Minnesota, motor vehicles must be equipped with seat belts and the use of seat belts is mandatory. Pass your DMV Written Test with flying colors Take me to the cheat sheet Minnesota This questions appears in the following tests: Minnesota Practice Test 4 Minnesota Practice Test 3