The SD70M has a wide nose and a large comfort cab (officially known as the "North American Safety Cab"), allowing more crew members to ride comfortably inside of the locomotive than the older standard cab designs. There are two versions of this cab on SD70M's, the Phase I, which was introduced on the SD60M, and is home on the SD80MAC & SD90MAC's and the Phase II, which made a return to a more boxy design a la the original 3 window SD60M cabs. Though the Phase II cab has a two piece window matching the Phase I cab windows, the lines of the nose are boxy, with a taller square midsection for more headroom.
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