by typesix
Trains mag reported many years ago on a mini Fed study on different locomotive front ends. To no one's surprise, cab type diesels like F and E units were better at grade crossings because the rounded ends and rounded pilots allowed the obstruction to roll off to the side. Unfortunately as reported, the train was in push mode. North side of the T started using push-pulls extensively after Blizzard of 1978, when a lot of the RDCs, already in bad condition, failed during the snow trying to push through. GPs were commonly used to push-pull RDCs, many of which had only one working engine, which was now just used for heat, AC, and electricity.