ACCIDENTS ON RURAL INTERSTATE AND PARKWAY ROADS AND THEIR RELATION TO PAVEMENT FRICTION

FRICTION MEASUREMENTS WERE MADE WITH A SKID TRAILER AT 70 MPH ON 820 MILES OF RURAL, FOUR-LANE, CONTROLLED-ACCESS ROUTES ON THE INTERSTATE AND PARKWAY SYSTEMS IN KENTUCKY. THESE FACILITIES WERE SUBDIVIDED INTO TEST SECTIONS AND HALF-MILE SITES. ACCIDENT EXPERIENCE, FRICTION MEASUREMENTS AND TRAFFIC VOLUMES WERE OBTAINED FOR EACH SUBDIVISION. THE EXPRESSION OF ACCIDENT OCCURRENCE WHICH CORRELATED BEST WITH SKID RESISTANCE WAS WET-SURFACE ACCIDENTS PER 100 MILLION VEHICLE MILES. THERE WAS A DEFINITE TREND EXHIBITING A RAPID DECREASE OF ACCIDENTS WITH INCREASING SKID NUMBER (70 MPH ) TO 26 PLUS OR MINUS 1; THEREAFTER, WITH INCREASING SKID NUMBERS, THE RATE OF DECREASE WAS CONSIDERABLY LESSENED. THIS TREND WAS DEVELOPED USING TEST-SECTION DATA AND VERIFIED USING HALF-MILE SITES. ANALYSIS OF PEAK SLIP NUMBERS AND ACCIDENT OCCURRENCES INDICATED SIMILAR TRENDS TO THOSE DEVELOPED WITH SKID NUMBERS.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 57 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00207512
  • Record Type: Publication
  • Report/Paper Numbers: Interim
  • Files: TRIS, STATEDOT
  • Created Date: Apr 30 1973 12:00AM