Development of Intersection Traffic Accident Risk Assessment Model

Traffic accidents at intersections in urban area are the most common and take a majority of the accident toll. Analysing and generating counter measures has been the major task for traffic safety officials and engineers. Without knowing the safety implications of the counter measures, the task normally concentrates on tackling accidents reflected in historic accident data. As more demand for traffic safety improvement emerges as local and national transport policy, more practical and site specific traffic accident risk assessment methodology is needed. In the paper, a different approach of assessing the risk of intersection traffic accident using SSAM (Surrogate Safety Assessment Model, developed by FHWA, US) is applied to a real site in Sungnam, Korea. SSAM uses trajectory data from a micro-simulation model.