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OMAHA, Nebraska -- Omaha-based Union Pacific railroad says it's making its largest-ever investment in upgrades to locomotives.
The company says it's spending $1 billion to modernize 600 older diesel locomotives in the next three years.
The railroad says the goal is to cut about 210,000 tons of carbon emissions a year, which they say is equivalent to taking 45,000 cars off the road.
They also say the upgrades will increase fuel efficiency by nearly 20 percent.
U-P says the upgrades are being done by Wabtec--a Pittsburgh, Pennsylvania-based company.
Wabtec will spend eight weeks overhauling the locomotives’ engines and installing new software and electronic controls.