MOTOR VEHICLE ACCIDENTS IN RELATION TO GEOMETRIC, AND TRAFFIC FEATURES OF HIGHWAY INTERSECTIONS: VOLUME III--APPENDICES

This volume, the third of a three-volume final report, provides supporting data regarding the study area, sampling and data-collection methods, analysis methods and data-processing techniques, and study results obtained in Volume II. The executive summary for managers is presented in Volume I, and the overall study results are analyzed in Volume II. A relatively detailed on-scene inventory of the geometry, other design features, and traffic counts for 558 intersections coupled with police reports on the 4372 accidents that occurred there during the three-year study period were used in the analysis. Forty-one accidents were studied in detail by a multidisciplinary team to determine causal factors and to evaluate the effects of federal safety standards on intersection-accident incidence and severity. Six intersection design features were demonstrably accident related--sight-distance obstruction, street-name signs, left-turn storage lanes, raised-marker delineation, bus-loading zones, and routing and multiphase signalization. Accident countermeasures based on the influence of these six factors are recommended.

• Corporate Authors:

  Stanford Research Institute

  333 Ravenswood Avenue
  Menlo Park, CA  United States  94025
• Authors:
  • David, N A
  • Norman, J R
• Publication Date: 1975-6

Media Info

• Pagination: 120 p.

Subject/Index Terms

• TRT Terms: Crash rates; Crash severity; Data analysis; Data collection; Highway safety; Intersections; Mathematical analysis; Road markings; Sight distance; Traffic; Traffic crashes; Traffic lanes; Traffic signs
• Uncontrolled Terms: Motor vehicle accidents
• Old TRIS Terms: Traffic marking
• Subject Areas: Design; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00178818
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-RD-76-130 Final Rpt., FCP 31K4-018
• Contract Numbers: DOT-FH-11-8096
• Files: TRIS, USDOT
• Created Date: Aug 27 1978 12:00AM