Union Pacific Railroad has been rebuilding their GE AC6000CW diesels (which the UP dubbed "AC6044AC"s, but this was not what GE put on their builder's plates) into AC4400CWM locomotives (essentially an AC4400CW, with an "M" added to show that it was remanufactured). And, because that nomenclature doesn't fit comfortably in the railroad's computer system, UP classes them as "C44ACM" diesels.
Having departed UP's Bailey Yard, after about a mile, the train (manifest train MNPAS-16, heading east from North Platte NE to Alton & Southern Railroad's Gateway Yard in East St. Louis IL) crept to a stop just after crossing the North Platte River, even though this signal at this grade crossing displayed a "clear" indication (aka "green").
This train is led by a pair of UP's C4400CWM/C44ACM/AC6000CW/AC6044AC locomotives (feel free to select whichever of these you prefer!). UP 6902 and 6909 are both painted in the latest iteration of UP's long-running Armour Yellow and Harbor Mist Grey paint scheme – the version in which the incredibly attractive winged shield on the nose has been eliminated (in favor of the bland UP shield without the wings), and the large American Flag Scotchlite™ decal on the long hood (which was subject to burning when a locomotive's prime mover would overheat) has been reduced in size and relocated to the side of the locomotive's nose, making that part of the locomotive look cluttered. Buried near the middle of the train is the Distributed Power Unit (DPU), CSX Transportation ET44AC 3429 (wearing CSXT's "YN3" scheme).
