Seat Belt Use

In 2011, the National Occupant Protection Use Survey showed seat belt use was 84% and seat belts saved an estimated 11,949 lives among passenger vehicle occupants age 5 and older.
Source: NHTSA Traffic Safety Facts - 2011 Data (pdf)

In 2012, the Iowa Seat Belt Use Survey showed Iowa's overall seat belt use rate was 92.38%.
Source: Iowa DOT (pdf)