So here is what I am finding:
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However, the Allegheny Types were designed to operate most efficiently at high speeds where their high horsepower could truly be appreciated. While the C&O had 23 of their 2-6-6-6s equipped with heat and signal lines for passenger service the steamers rarely saw use in this capacity except for occasionally moving a few heavy mail trains.
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The C&O had 23 of its "Alleghenies" equipped with steam heat and signal lines for passenger service, but they were used sparingly, pulling an occasional heavy mail train or a troop train during World War II.
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23 were equipped for passenger operation, but if they were so used, it was to pull troop trains.
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So, looks like they cruise at 60Mph pulling passengers (troops exclusively?) or straight mail consists. Anyone know if troop train cars exist?
