Operating on NS' former Princeton-Deepwater District at Robson, a Kanawha River Railroad-operated geometry test train battles heavy snow under the lead power of CN-painted EJ&E SD38-2 No. 658.

Amid a bitterly cold snow squall, EJ&E SD38-2 No. 658 leads two FRA test cars through Watco's Dickinson Yard southbound on the Kanawha River Railroad.

With its head end entering California and its rear end in Arizona, a westbound BNSF stack train crosses the Colorado River on its way to Los Angeles from the Midwest.

A BNSF Railway freight train heads for the Tehachapi loops at sundown in this Spring 2017 view.

With one of GE's newer Tier 4 ET44AC locomotives in the lead, a UP freight train heads for Mojave from Bakersfield on the Tehachapi Pass route.

With Tehachapi's spring 'green' season still in bloom, an overpowered BNSF intermodal train heads for Mojave across the famed SP Tehachapi Pass route.

Amtrak's westbound Southwest Chief train No. 3 eases into the tight curves at Ojita as the Los Angeles-bound train approaches the intermediate semaphores at Ojita on BNSF's Glorieta Subdivi... (more)

Amtrak's westbound Southwest Chief train No. 3 charges through the interlocking at WSS Colmor at track speed on BNSF's former Santa Fe Raton Subdivision.

Amtrak's westbound Southwest Chief train No. 3 splits the historic Santa Fe semaphore signals at the Colmor intermediates on its way to Albuquerque, N.M., and points west.

BNSF EMD SD70ACe No. 8504 leads a locomotive test train south toward Raton Pass featuring a mix of BNSF EMD and GE power, BNSF passenger test cars, and Progress Rail' EMD SD70ACe-T4 demo unit.

BNSF officials switch out the consist of a locomotive test train featuring Progress Rail' Tier 4 SD70ACe-T4 and two BNSF test cars before a run across Santa Fe's Raton Pass on the Colorado and New... (more)

Rare mileage Zephyr... Amtrak's eastbound California Zephyr train No. 6 rolls east near Rock River at track speed on UP's Laramie Subdivision in Wyoming. Typically, the Zephyrs would operat... (more)

A pair of Burlington Northern-painted executive SD70MACs idle in Longmont as a late summer rain shower drifts across the Front Range.

With the Colorado aspen still at peak colors in this late September view, an eastbound UP coal train charges through Hot Sulphur Springs on UP's ex-Rio Grande mainline.

An eastbound Union Pacific coal train eases into the S curves just east of Kremmling on its way to Denver from the coal loadouts of Colorado.