Union Pacific ES44AC 7400 (along with another ES44AC, UP 5442) leads an eastbound intermodal train as it prepares to depart the railroad's Dolores Yard. This locomotive was unveiled four years ea... (more)

CSX Transportation SD40 8413 is the former Chesapeake & Ohio 7562, originally C&O 7462. Now classed as an SD40-2 thanks to some mechanical upgrades, this locomotive was built by EMD as an SD40 in... (more)

Awaiting its next call to duty at Union Pacific Railroad’s Dolores Yard is Kansas City Southern Railway ES44AC 4767. After 2½ years of service, this locomotive (built in November 2011) still l... (more)

Union Pacific GP38-2 609 was built in June 1980 by General Motors Electro-Motive Division as Southern Pacific 4842, and UP SW1500 Y1136 was built by EMD in November 1969 as SP 2552. (Carson Calif... (more)

Union Pacific AC4400CW 6279 shows its heritage as Southern Pacific 248, built by GE in June 1995, and spotted at the UP's Dolores Yard. (Carson, California – October 1, 2008)

A trio of two kind of new and one brand new eSPee AC4400CWs head towards the Wilmington Wye south of Dolores Yard. October 15 1995.

Awaiting its next call to duty at Union Pacific Railroad’s Dolores Yard is Kansas City Southern Railway ES44AC 4767. After 2½ years of service, this locomotive (built in November 2011) still l... (more)

When the British Petroleum (BP Products North America) refinery in Carson was sold to Tesoro Petroleum, their SW1200 switcher, BPOX 458, became Tesoro 001. Built by EMD in February 1959 as Colora... (more)

Switching cars at Union Pacific's Intermodal Container Transfer Facility (ICTF), in Long Beach adjacent to their Dolores Yard, are UP SD40M-2 2664 (for all intents and purposes and SD45) and an SD... (more)

A colorful group of Union Pacific SD70ACe locomotives was found in the railroad's Dolores Yard on this October day: UP 1996 (their Southern Pacific Heritage unit, and the former UP 8523), UP 1988... (more)

In the latter half of 2013 General Electric built a group of EF44AC 4500hp Tier 4 emissions test locomotives, painted blue and sent out to test on several railroads, including (as seen here) Union... (more)

Union Pacific's Dolores Yard often gets off-line motive power off of transcontinental trains that end their runs here, due to the yard's proximity to the Ports of Los Angeles and Long Beach. One ... (more)

Nearly seven years after receiving the red and yellow colors of the proposed Southern Pacific Santa Fe merger, Southern Pacific SD45R 7564 is showing some wear and tear when found in Dolores Yard ... (more)

Transportacion Ferroviaria Mexicana was the Mexican railroad owned by Kansas City Southern and later renamed Kansas City Southern de México. But for a while, TFM’s locomotives were painted in ... (more)

October 14, 1996 - at Dolores Yard in Carson, CA (although I may be over the Compton border for this shot), a pair of speed lettered SP brutes await their next assignment. I was just getting back ... (more)