Davidellias
Member
While spotting a while back, I noticed an NS SD70 on the lash-up had small PRR markings under the number. I just brushed it off thinking it was an ex-CR unit and they had changed the markings to PRR like some of the freight cars, but recently while in Roanoke, i noticed loco motive with small SOU,NW and even GSF markings under the locomotive numbers. Why does NS do this? Is it related to what Southern used to do?