摘要: |
This document presents problem size assessments and statistical crash descriptions for single vehicle roadway departure (SVRD) crashes, including crashes into parked vehicles. Principal data sources are the 1991 General Estimates System (GES) and Fatal Accident Reporting System (FARS). In this report, the SVRD crash problem size is assessed using such measures as number of crashes, number and severity of injuries, number of fatalities, crash involvement rate, and crash involvement likelihood. Problem size statistics are provided for five vehicle type categories: all vehicles combined, passenger vehicles (i.e., cars, light trucks, light vans), combination-unit trucks, medium/heavy single-unit trucks, and motorcycles. |