ESTIMATING THE SAFETY EFFECTS OF THE 55 M.P.H. NATIONAL SPEED LIMIT
This paper estimates that approximately 6,000 lives a year have been saved on the national highways since the enactment of the 55 mph speed limit. Regression lines are established for the fatality rate on each of the major highway systems. These linear equations are used to compute the expected values of the fatality rates for 1974 and 1975. The expected number of fatalities on each system are computed by applying these rates to the reported amount of travel. The difference between the expected number of fatalities and the actual number represents the reduction attributed to the speed limit. /SRIS/
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Corporate Authors:
National Highway Traffic Safety Administration
National Center for Statistics and Analysis, 1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Cerrelli, E
- Publication Date: 1977-6
Media Info
- Features: Figures; Tables;
- Pagination: 36 p.
Subject/Index Terms
- TRT Terms: Crash rates; Fatalities; Highway safety; Regression analysis; Speed limits
- Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors;
Filing Info
- Accession Number: 00178507
- Record Type: Publication
- Source Agency: National Safety Council Safety Research Info Serv
- Report/Paper Numbers: DOT-HS-802 475
- Files: TRIS, USDOT
- Created Date: Sep 14 1978 12:00AM