Accident models for two-lane rural roads : segments and intersections

00758041403521821998Final report Aug 1994-Sep 1997Joe G. Bared, HSR-20PDFTech ReportFHWA-RD-98-133DTFH61-94-Z-00124Rural highwaysAccident dataAccident locationsIntersectionsTwo lane highwaysInteractive Highway Safety Design Model (IHSDM)Minnesota;United States;WashingtonUnited States. Federal Highway AdministrationVogt ABared JGPragmatics, Inc.United States. Federal Highway AdministrationNTL-SAFETY AND SECURITY-Highway SafetyAGR-INFRASTRUCTURE-Rural RoadsFederal Highway AdministrationThis report is a direct step for the implementation of the Accident Analysis Module in the Interactive Highway Safety Design Model (IHSDM). The Accident Analysis Module is expected to estimate the safety of two-lane rural highway characteristics for existing and new projects. Several accident models are developed to estimate accident frequencies. The three main models are for road segments (with non-intersection accidents), one-way stop-controlled intersections with three legs, and two-way stop-controlled intersections with four legs. This report describes the collection, analysis, and modeling of accidents on rural roads in Minnesota (1985-1989) and Washington State (1993-1995)