Abstract
Non-recurrent congestion mainly due to the traffic incident is unpredictable. However, its substantial impact on the traffic flow temporarily reduces capacity of roads and incurs enormous time loss. In order to minimize the economic loss from the congestion, the non-recurrent congestion should be dealt with properly and effectively. This study aims to understand major factors affecting the clearance time using complete 2,647 incident data occurred on freeways of Korea in 2005. Using SEM relationships among various exogenous variables and incident clearance time are explored. The model developed in this study is validated using incident data in 2004. The resulting model provides valuable information for the incident clearance time, which can be utilized to manage the incident effectively.
