HB 90 -- Seat Belts Sponsor: St. Onge This bill requires all drivers and passengers in cars or trucks to wear a seat belt. Exemptions are allowed for United States Postal Service employees while performing their duties, persons operating or riding a motor vehicle being used in agricultural work-related activities, and persons with a medical reason with documentation from a physician. Currently, each driver and front-seat passenger of passenger cars and trucks with a licensed gross weight under 12,000 pounds must wear a seat belt, and a person cannot be stopped solely for a seat belt violation.Copyright (c) Missouri House of Representatives