摘要：AbstractOD matrix is one of the important dates for traffic planning, management and controlling, and OD demand estimation is an advanced technical method to gain the OD matrix dates. When the range of study focus on the interest of the planners, trip demand estimation for subnetwork becomes necessary. This paper summarizes and compares existing methods for subnetwork OD matrix estimation, including static and dynamic estimation methods. Different models and algorithms are discussed and the realistic significance of every technique will be revealed. Hot points of subnetwork demand estimation in future also will be given in the paper.
