"PTC is a is a system of requirements for monitoring and controlling movements. There can be many forms of PTC. Just think of PTC as a generic term and E-ATC is the specific type of system SMART uses."
"The system that SMART/NWP uses is called E-ATC, "Enhanced Automatic Train Control" and matches the 4 key requirements of PTC. E-ATC uses high frequency code through the rails instead of a GPS bases system like the most class 1 railroads.…"
"I don't have a date for the last time 1922 pull freight, but I posted a picture here on the site late last year (2018) of a forlorn 1922 parked in the Shellville cage when I drove out there to see what was happening as Jake Parks had left the…"