DENVER (KDVR) — One of the world’s largest locomotives passed through Colorado in October, operating much like it did when it was first built in the mid-1900s. The train, known as Big Boy No. 4014, ...

The January 2026 issue of Trains Magazine includes author Greg Richardson’s article on the development of positive train control, “The road to PTC,” viewed primarily through the lens of his time in ...

Hundreds of Kansans greet the world's largest steam locomotive, Big Boy No. 4014, on Oct. 17, 2024, in North Topeka. (Anna Kaminski/Kansas Reflector) TOPEKA — The train named Big Boy was late.

Over a thousand people of all ages flocked to see Big Boy No. 4014, Union Pacific's sole operational Big Boy steam locomotive, in North Little Rock on Sunday evening. The train arrived in North Little ...

The PTC (Positive Train Control) system on Union Pacific Big Boy 4014, the world’s largest operating steam locomotive, has been upgraded with a self-contained technology, which means the massive ...

OGDEN — A legendary locomotive made its return to Ogden this weekend. Union Pacific’s Big Boy No. 4014 made a weekend stop that drew thousands of visitors of all ages to Union Station from its arrival ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER (KDVR) — One of the world’s largest ...