The National Occupant Protection Use Survey (NOPUS) was designed to gather information on the use of safety belts, motorcycle helmets, and child restraints. NOPUS is composed of three observational studies:​ the moving traffic study, which provides information on overall shoulder belt use and motorcycle helmet use;​ the controlled intersection study, which provides more detailed information about shoulder belt use by type of vehicle, characteristics of the belt users and child restraint use;​ and the shopping center study, which provides information on rear-seat belt use and shoulder belt misuse. An overview of the NOPUS survey design, implementation and significant results from all three of the studies are presented in this paper.