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HIGHWAY SAFETY AND THE 55 MPH SPEED LIMIT
ESTIMATED REDUCTIONS IN INJURIES AND INJURY SEVERITY
18 other sections not shown
55 mph speed additional adjustment Administration analysis annually Appendix Arterial average speeds behavior bus companies bus drivers cars CB radios CB-equipped changes citations citizens band radios Committee compliance costs crashes declined Department of Transportation effect emergency enforcement estimates exceeding 55 mph fatal accidents fatality rate federal Federal Highway Administration FHWA fuel Greyhound higher speeds highway fatalities highway systems highways posted impact improved incidents increased indicate intercity bus intercity buses Jefferson Lines less mandatory-use law maximum speed limit measure million monitoring motor vehicle accidents motorists mph speed limit National Highway national maximum speed NHTSA North Carolina occur on-board passengers penalties points assessed posted at 55 programs radios on board result roads routes rural Interstates safety belts safety benefits sample speed variance speedometer error Statistics Table Trailways Transportation Research Board trends trips truck U.S. Department University variable vehicle miles vehicle speeds violations