Content deleted Content added
This is nonsense. New CSX CEO supports PSR but says it was implemented poorly. |
Woohookitty (talk | contribs) No edit summary |
||
Line 1:
{{Short description|Freight railroad operations approach}}
[[File:Union Pacific Davidson Yard in Fort Worth.jpg|thumb|Precision railroading attempts to minimize the number of times on each journey a freight car must be sorted in [[classification
'''Precision railroading''' or '''precision scheduled railroading''' ('''PSR''') is a concept in [[freight railroad]] operations pioneered by [[E. Hunter Harrison]] in 1993, and adopted by nearly every North American [[Class I railroad]]. It shifts the focus from older practices, such as [[unit train]]s, [[hub and spoke]] operations, and individual car switching at [[hump yard]]s to emphasizing point-to-point freight car movements on simplified routing networks. Under PSR, freight trains operate on fixed schedules, much like passenger trains, instead of being dispatched whenever a sufficient number of loaded cars are available. In the past, [[Intermodal freight transport|intermodal]] trains and general merchandise trains operated separately; under PSR they are combined as needed, typically with [[distributed power]]. Inventories of freight cars and locomotives are reduced and fewer workers are employed for a given level of traffic. The result is an often substantial decrease in railroad [[operating ratio]]s and other financial and operating metrics at the cost of less-reliable service (particularly to smaller customers), long-term capacity issues, and possibly increased derailments and other safety risks associated with longer trains and crew fatigue.<ref>{{cite news |last1=Schwartz |first1=Dan |last2=Sanders |first2=Topher |title=The True Dangers of Long Trains |newspaper=ProPublica |date=April 3, 2023 |access-date=April 3, 2023 |url=https://www.propublica.org/article/train-derailment-long-trains |archive-url=https://web.archive.org/web/20230403144035/https://www.propublica.org/article/train-derailment-long-trains |archive-date=April 3, 2023}}</ref>
| |||