Three of UP's "famous" 5400 series ES44AC GEVOs tackle the 2.2 percent grade at Mercel. Fallowing the tracks that curve left and right along the cliff side edges of the vast rolling his of Tehachapi Pass. Today, UP 5450 pulls its monster of a train, the Roseville to West Colton manifest, up the pass as the sound of 13,200 total horsepower battles the hill at a spectacular 15 miles per hour.
