> HOWEVER, from the Class 1's lawyers perspectives PTC is absolutely mandatory as a critical piece of CYA hardware as if ANYTHING should go wrong ( derailment, grade crossing accident, trespasser fatality etc., etc. ) they'll be able to show the jury that the railroad did everything possible to equip it's locomotives with the latest and best safety equipment.

PTC has nothing to do with grade crossings, but nose cameras do. Have you heard of any grade crossing lawsuits in the last 10 years? And this is not to mention event recorders which keep track of headlight illumination levels, bell status, horn blowing, etc., etc. Event recorders predate PTC by at lease two decades.