Study on the risk of swerving maneuver caused by roadside parking vehicles

The purpose of this papaer is to investigate the risk caused by roadside parking vehicles. The data used in this study were observed by VTR camera at a four-lane arterial street. At the observed section, roadside parking is prohibited, but some vehicles usually park at the roadside in front of a shopping store because of the insufficient parking capacity of the store. Swerving and lane-changing pattern of straight through vehicles caused by roadside parking vehicles are classified and the accepted gaps of swerving and lane-changing vehicles are analyzed by use of observed data. A probabilistic model is built to estimate the risk of accident based on the headway distribution and the result of the gap acceptance analysis.