In this photo provided by Wabtec, a completed modernized Union Pacific locomotive is prepped for delivery at Wabtec’s Fort Worth plant in Fort Worth, Texas, in October 2021. 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 to do more to cut pollution from its engines. (Jay Sifler/Wabtec via AP)
Josh Funk AP Business Writer OMAHA, Neb. (AP) — Union Pacific will spend more than $1 billion to upgrade 600 of its old diesel locomotives…
