Visitor Comments about this Photo:That dwarf signal in the left foreground is the first one I have seen on the former Boston & Maine with a Rule 280a head, "CLEAR TO NEXT INTERLOCKING" when flashing. I'm guessing this is part of the federally-mandated Positive Train Control upgrade. Does anybody have any information on these new signals? Posted by John Stock on 2021-09-24 14:17:04 You must be logged on to post comments. |