Pedalcyclists

New "Bicyclists and Other Cyclists" Traffic Safety Facts (2011 Data) from the National Highway Traffic Safety Administration. (pdf)

Pedalcyclists - bicyclists and riders of two-wheel nonmotorized vehicles, tricycles, and unicycles powered solely by pedals.

In 2011, 48,000 pedalcyclists were injured in motor vehicle traffic crashes. The highest injury rate occurred in the 16-20 age group.

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)