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.

• Record URL:
  • https://doi.org/10.13023/KTC.RR.1972.339
• Supplemental Notes:
  • APP RES REPT 339
• Corporate Authors:

  Kentucky Department Highways

  ,    
• Authors:
  • Napier, C T
• Publication Date: 1972-9

Media Info

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

Subject/Index Terms

• TRT Terms: Crash rates; Friction; Skid resistance; Testing
• Subject Areas: Highways; Pavements;

Filing Info

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