Union Pacific faced the immense challenge of hauling heavy freight trains across rugged mountain terrain, requiring locomotives with exceptional power and reliability. Unlike other railroads that ...

Union Pacific started using ‘mother-slug’ sets with ZTR’s Nexsys control systems in 2017. The new locomotives will be constructed at Union Pacific’s North Little Rock facility in Arkansas. Union ...

Union Pacific announced Friday it will spend $100 million to buy 20 battery-electric engines. It said the investment is "the largest investment in battery-electric technology" by a major railroad.

Big Boy No. 4014 was delivered to Union Pacific in December 1941. The locomotive was retired 20 years later, having traveled 1,031,205 miles in its 20 years in service, according to Union Pacific.

Union Pacific's Big Boy No. 4014 will depart from Denver Union Station back to the locomotive's home base in Cheyenne, ending the locomotive's "Heartland of America Tour." ...

ROSEVILLE, Calif. (AP) — Union Pacific said on Monday that it will spend $20 million testing low-emissions locomotives in California. The railroad may eventually test up to 25 locomotives with ...

Union Pacific later said it will be adding 20 electric battery locomotives to its railroads for more than $100 million. In addition to its deal with Caterpillar, the company will acquire the other ...

OMAHA, Neb. (AP) — Union Pacific will spend more than $1 billion to upgrade 600 of its old diesel locomotives over the next three years and make them more efficient, but regulators still want it ...

Union Pacific buys ten more all-electric locomotives, this time from Caterpillar Inc.’s Progress Rail, investing over $100 million in total Scooter Doll | Jan 31 2022 - 7:45 am PT ...