Except for New Hampshire, all states and the District of Columbia require adult front-seat occupants of motor vehicles to use seat belts. Adult rear-seat passengers are also covered by the laws in 31 states and the District of Columbia. Children are covered by separate laws.

State seat belt laws are divided into two categories: primary and secondary. Primary seat belt laws allow law enforcement officers to stop a motor vehicle and to issue a ticket or citation to a driver or passenger for not wearing a seat belt without any other traffic offense having occurred. Secondary seat belt laws only allow law enforcement officers to issue a ticket or citation for not wearing a seat belt when there has been another traffic offense by an occupant of the vehicle for which the occupant may be issued a ticket or citation.

In Michigan, seat belt use is mandated by law for drivers and front-seat passengers under the Michigan Vehicle Code (MVC). Michigan's seat belt law is a primary enforcement law, which means that police officers can stop and ticket a driver solely for not wearing a seat belt. The law requires all front-seat occupants to wear a properly adjusted and fastened safety belt. For rear-seat passengers, Michigan does not currently have a law that requires adults to wear seat belts, although all children under the age of 16 must be properly buckled up in any seating position. Additionally, Michigan has child restraint laws that require children to be in an appropriate child safety seat or booster seat. Violation of the seat belt law can result in fines and fees. It's important to note that these laws are subject to change, and it's advisable to check the latest statutes or consult with an attorney for the most current information.