(trains) and human resource (crews) assets.

A crew dispatcher is also employed by the railroad to keep track of train crews and their assignments. The crew dispatcher is responsible for assigning train crew to trains based upon scheduled rosters, and also making real-time adjustments as necessary based on rail traffic conditions and delays. The crew dispatcher is normally assisted by a crew caller whose responsibility is to telephone the train and engine crews to advise them of time to report for duty. The crew dispatcher is also responsible