NEGATIVE BINOMIAL ANALYSIS OF INTERSECTION-ACCIDENT FREQUENCIES

Death, injury, lost productivity, and property damage are the costly results of traffic accidents at urban intersections. Unfortunately, the elements that effect the frequency of intersection accidents are not well understood, making it difficult to estimate the effectiveness of specific intersection improvements aimed at reducing accident frequency. Investigators used 7-year accident data from 63 intersections in Bellevue, Washington, to estimate a negative binomial regression of the frequency of accidents at intersection approaches. The procedure uncovered important interactions between geometric and traffic-related elements and accident frequencies. The evidence brought forth from these findings could lead to an approach to estimate the accident reduction benefits of various improvements on operationally deficient intersections.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00719286
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Mar 17 1996 12:00AM