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Critical path method (CPM) scheduling is a computerized, comprehensive scheduling program that can be used to help contractors keep a project on track. CPM scheduling is the representation of a project plan by schematic diagram or network that shows the sequence and relations among all the activities required to complete a project. It also entails the logical analysis of the network in determining the best overall approach to a project's successful completion. CMP can help determine which completion date is possible, given the available resources and cost constraints. CPM can also improve the efficiency of operations through quicker and more responsive controls. Potential problems can be identified early, and tasks such as processing change orders, analyzing their impact on the schedule and monitoring the changes until completion are all made easier and more effective. The use of a CPM schedule on the reconstruction of the Cross Westchester Expressway in New York is highlighted, and guidelines are given for using CPM on similar projects.