This study was conducted to determine the use of helmets by motorcycle riders in Iowa and the average number of miles a motorcycle is operated in one year. Our finding regarding annual mileage of motorcyclists differs greatly from the statistic given by the Federal Highway Administration in their 1976 report. The FHWA's 1976 estimate of 4,500 miles per year indicates either that Iowa's figure of 2,241 miles per year iss much below the naational verage, or that one or both of these estimates is iinnnnaccurate. The mileage estimate can be used to compare fatality rates of all vehicles with fatality rates of motorcycles (per hundred million vehicle miles). There were 159,509 motorcycles registered during 1977. Using thee mileage figure of 2,241 miles per year gives a total of 357,455,699 vehicle miles for all motorcycles. In 1977 there were 69 motorcycle fatalities, or 19.3 fatalities per hundred million motorcycle miles. This compares with a 3.03 fatality rate for all vehicles in 1977. The fatality rate for motorcycles is more than six times higher than the rate for all vehicles. Fatality rates can also calculated using the number of vehicle registrations. Using 1977 Iowa data, the motorcycle fatality rate is only 1.84 times the fatality rate for all vehicles--4.3 fatalities per 10,000 registered motorcycles compared to 2.4 fatalities per 10,000 registered vehicles.

Media Info

  • Features: Figures; Tables;
  • Pagination: 7 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319861
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Created Date: Feb 6 1981 12:00AM