This paper concerns the evaluation of the warning ticket phase of the North Carolina occupant restraint law, which became effective on October 1, 1985. The law states that drivers and front seat occupants of passenger motor vehicles (i.e., those designed to carry ten or fewer passengers) manufactured with seat belts must have the available belts properly fastened when the vehicle is in forward motion. This evaluation utilizes several data files, including:​ (1) statewide accident data, (2) statewide enforcement data, and (3) a probability sample of statewide belt use by front seat occupants. The evaluation examines changes in belt use and injury distributions after implementation of the law, as compared to appropriate before measures. An examination is also made of the related enforcement efforts.