FREEWAY ACCIDENTS AND LEVELS OF SERVICE

THE PURPOSE IS TO MEASURE THE RELATIONSHIP OF VARIOUS LEVELS OF SERVICE TO FREEWAY ACCIDENTS. IT WAS IMPORTANT TO DETERMINE WHETHER INCREASES TIN DENSITY RESULTED IN CONCURRENT INCREASES OF ACCIDENT POTENTIAL; IF REAR-END ACCIDENTS INCREASED AS HEADWAY DECREASED; AND IF RUN OFF OF THE ROAD ACCIDENTS INCREASED AS HEADWAY INCREASED; A FOUR MILE SECTION OF THE MARK TWAIN EXPRESSWAY IN ST. LOUIS WAS USED IN MEASURING THE CORRELATION OF (1) ACCIDENT RATES TO LEVELS OF SERVICE, AND (2) TYPES OF ACCIDENTS TO LEVELS OF SERVICE. NO EVIDENCE COULD BE FOUND TO INDICATE THAT ACCIDENT COLLISION RATES HAVE ANY RELATION TO TRAFFIC CONDITIONS AS COVERED BY THIS STUDY. /FHWA/

• Corporate Authors:

  Missouri State Highway Commission

  Division of Planning
  , MO  United States 

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Crash rates; Freeways; Headways; Level of service; Traffic crashes; Traffic density; Traffic flow
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00219758
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: No 71-6
• Files: TRIS, USDOT, STATEDOT
• Created Date: Feb 15 1972 12:00AM