By William C. Keppen, Jr., Railway Age Magazine; June 10, 2019
Six out of the seven Class I freight railroads in operating in the U.S. (including CN’s and Canadian Pacific’s subsidiaries) have implemented or are in the process of transitioning to Precision Scheduled Railroading (PSR). While programs and processes will certainly vary from one railroad to another, all are likely designed around five foundation principles, as defined in 2016 by CP and the late Hunter Harrison during its aborted merger attempt with Norfolk Southern.