There is a fair amount of Pennsy signals left on the NS mainline over the Allegheny Mountains between Pittsburgh and Altoona. Here a westbound coast downhill pass a set at Portage.
After arriving at Mechanicville as CP 934 and making a crew change, Pan Am Southern MOAY, the NS Chicago to Ayer, MA autos and intermodal, is rolling EB again at the east end of the new intermodal... (more)