In 2011, seat belt use in the United States ranged from 73.2 percent in Massachusetts to 97.5 percent in Washington. These results are from probability-based observational surveys conducted by 50 States, the District of Columbia, and U.S. Territories. These surveys are conducted in accordance with criteria established by the National Highway Traffic Safety Administration to ensure reliable results. Compliance with the criteria is verified annually by NHTSA’s National Center for Statistics and Analysis. (Author/publisher)
Samenvatting