Speed data from 11 states were analyzed to determine the effects of the increased Maximum Speed Limit (MSL) on travel speed and speed variance on 65 MPH rural interstates and the spillover effects on 55 MPH roads adjacent to them. Differential car/truck speeds, time of day and day of week effects were also examined. An analysis of accidents in rural interstate segments near 28 of the speed study sites indicated that the rates of injury accidents increased between 1986 and 1988. There were too few fatalities in these segments to draw definite conclusions about fatalities. The observed changes in accident rates could not be conclusively linked to the magnitude of changes in mean speed or percent of vehicles exceeding 70 MPH.
Effect of the 65 MPH Speed Limit on Travel Speeds and Related Crashes
1991
102 pages
Report
Keine Angabe
Englisch
Transportation Safety , Road Transportation , Speed studies , Interstate highway systems , Rural areas , Speed patterns , Trends , Statistical data , Day vs. night speeds , Trucks , Automobiles , Traffic safety , Accident rates , States(United States) , 65 miles/hr. speed limit , 55 miles/hr. speed limit
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