EFFECT OF ROADWAY GEOMETRICS AND ENVIRONMENTAL-FACTORS ON RURAL FREEWAY ACCIDENT FREQUENCIES

Citation
V. Shankar et al., EFFECT OF ROADWAY GEOMETRICS AND ENVIRONMENTAL-FACTORS ON RURAL FREEWAY ACCIDENT FREQUENCIES, Accident analysis and prevention, 27(3), 1995, pp. 371-389
Citations number
45
Categorie Soggetti
Public, Environmental & Occupation Heath",Transportation
ISSN journal
00014575
Volume
27
Issue
3
Year of publication
1995
Pages
371 - 389
Database
ISI
SICI code
0001-4575(1995)27:3<371:EORGAE>2.0.ZU;2-9
Abstract
This paper explores the frequency of occurrence of highway accidents o n the basis of a multivariate analysis of roadway geometrics (e.g. hor izontal and vertical alignments), weather, and other seasonal effects. Based on accident data collected in the field, a negative binomial mo del of overall accident frequencies is estimated along with models of the frequency of specific accident types. Interactions between weather and geometric variables are proposed as part of the model specificati ons. The results of the analysis uncover important determinants of acc ident frequency. By studying the relationship between weather and geom etric elements, this paper offers insight into potential measures to c ounter the adverse effects of weather on highway sections with challen ging geometrics.