PTS? Is that where they can remotely manipulate the switches? If so, I would imagine there is a high potential for a bad actor to hack that system and send some chlorine cars tumbling down the road.
As for CSX, they started selling off some of their assets before Harrison showed up and upped that tempo afterward.
He lit the match and combined with the government the whole thing is a mess
PTS is Positive Train Scheduling.. it was the “invention” of Hunter Harrison and it has basically screwed up the efficiency of the Class 1s. Everyone is trying to make it work, if you watch some of the Virtual Railfan Cams you will see 2-2 1/2 mile long trains with 2-3 locomotives as DPUs (dispersed power units) and they are ripe for derailment.