Initial Terminal
https://smart-union.org/smart-td-and-labor-win-latest-battle-against-carriers-aar/
This alliance of would-be competitors rallied together around the cause of changing the official definition, saying that they only wanted to change it in terms of PTC rules. Since you must have a functioning PTC to take the main from an initial terminal, the carriers claimed they were concerned that passenger trains that change directions at the end of the line and go the opposite direction under a new train symbol are getting stranded and unable to move their passengers because of the current definition of “initial terminal” for a new train. They also put forward an example of a coal train in relay service that goes into the coal plant empty under one train symbol and leaves under a new train symbol when loaded.
