This report describes the collection, analysis, and modeling of accident and roadway data pertaining to segments and intersections on rural roads in the States of Minnesota (1985-1989) and Washington (1993-1995). The segments are on two-lane roads, and the intersections are three-legged and four-legged intersections of such roads, stop-controlled on the minor legs. Data were acquired from the Highway Safety Information System, photologs, construction plans, and State data bases. More than 1,300 segments and more than 700 intersections are included in the final samples on which the modeling is based. Variables collected include accident counts, traffic exposure, surface and shoulder width, Roadside Hazard Rating, number of driveways, channelization, horizontal and vertical alignments, intersection angles, speed limits, and commercial traffic percentage. Models of Poisson type, negative binominal type (the latter due to Shaw-Pin Miaou) are developed, and advanced statistical techniques are applied to assess the explanatory value of the models in the presence of Poisson randomness and overdispersion.
Accident Models for Two-Lane Rural Roads: Segments and Intersections
1998
182 pages
Report
No indication
English
Transportation Safety , Road Transportation , Transportation , Transportation & Traffic Planning , Accident models , Rural areas , Minnesota , Washington State , Rural intersections , Accident prevention , Data collection , Statistical data , Highway design , Accident analysis , Intersections , Literature reviews , Two lane roads , Highway safety , Accident counts , Transportation planning , Highway segments , Traffic exposure
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