An NS ES44AC leads four UP units on the climb from the base of Coal Creek Canyon up toward Tunnel One. When Union Pacific activates PTC (Positive Train Control) on the Moffat, there is a good chance it will mean the end of foreign power on the point of trains...at least for awhile. Until foreign power is equipped with PTC technology that is compatible with UP's, such units will not be able to lead on the Moffat.
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