Nh Seatbelt Law 2025. According to the new hampshire department of justice new hampshire law requires that any child under the age of eighteen riding as a passenger in a motor vehicle be. New hampshire has enacted neither a primary nor a secondary seat belt law for adults, although the state does have a primary child passenger safety law that covers all drivers and.
New hampshire has the lowest seat belt use rate (75.5%) of any u.s. Seat belts do reduce the risk of death and serious injury when motor vehicle crashes occur.