The objectives of this study were to determine average accident rates for various categories of at-grade intersections and to identify intersections having high accident rates. This involved locating intersections of two or more state-maintained highways and determining the appropriate volumes to use as well as locating the accidents occurring at any given intersection. A procedure was developed to allow for the identification of intersections having high or critical accident rates. A list of the intersections of two or more state-maintained roadways was developed. A total of 6,707 intersections were included in the file. Using county, route and milepoint information, accident and volume data were associated with each intersection. Accident rates were calculated for each intersection. The rates are in terms of accidents per million entering vehicles (ACC/MV). Statewide average and critical accident rates were calculated by functional classification. Intersections having critical accident rates were then identified using both the typical procedure and a procedure which accounted for the regression-to-the-mean bias.

  • Record URL:
  • Corporate Authors:

    University of Kentucky, Lexington

    Kentucky Transportation Center
    College of Engineering, 176 Raymond Building
    Lexington, KY  United States  40506-0281

    Kentucky Transportation Cabinet

    200 Mero Street
    Frankfort, KY  United States  40622

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Agent, K R
  • Publication Date: 1993-4


  • English

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 69 p.

Subject/Index Terms

  • TRT Terms: Crash rates; Intersections
  • Subject Areas: Highways; Safety and Human Factors; I82: Accidents and Transport Infrastructure;

Filing Info

  • Accession Number: 00664335
  • Record Type: Publication
  • Report/Paper Numbers: KTC-93-11
  • Contract Numbers: KYHPR-92-148
  • Created Date: Aug 17 1994 12:00AM