Seat belt law enforcement and racial disparities in seat belt use
American journal of preventive medicine
Numerous reports have documented a lower prevalence of seat belt use among blacks in the United States, compared with whites. Limited data suggest that black–white disparities in states with primary seat belt laws (motorists can be stopped and cited solely for violating a seat belt law) are less marked than in states with secondary laws (motorists can be cited for violating a seat belt law only if stopped for another offense).
Briggs, Nathaniel C.; Schlundt, David G.; Levine, Robert S.; and Goldzweig, Irwin A., "Seat belt law enforcement and racial disparities in seat belt use" (2006). Public Health. 25.