"Precision Scheduled Railroading" (PSR) is a concept that has been closely associated with the late railway magnate, E. Hunter Harrison. More than just scheduling terminal-to-terminal trips for trains, PSR creates entire point-to-point trip plans for individual railroad shipments. Service failures can result if there is a mismatch between demand and the amount of capacity provided. Prior research suggests that "precision execution" of freight trains is a necessary, but not sufficient condition for achieving service reliability. Since the concept was first put into practice, the benefits to shipment arrival reliability and to freight railroads' profitability has been demonstrated by several Class One freight railroads where it has been implemented. However, the effects of the "Precision Scheduled Railroad" operating strategy to passenger railway operations in shared freight/passenger corridors has not been studied in detail. This paper researches the effects of the "Precision Scheduled Railroad" freight railroad operations on the passenger railways. The key measures examined are "Host Railroad Minutes of Delay per 10,000 Train-Miles" and "On-Time Performance" of individual passenger railways, both intercity passenger railways and high-speed rail. Then, conclusions about the work are presented.
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