, starting in 2027, with a goal to have 40% of all semitrailers sold running on zero-emission engines by 2035.
The new rule also requires companies that operate diesel- or natural-gas-powered trucks to move toward lowered nitrogen oxide emissions. Those emissions are a precursor to ozone pollution. And Weld County officials opposed the rule because they wanted vehicles powered by natural gas included in the plan.But Colorado regulators are in a hurry to reduce air pollution in the state after the Environmental Protection Agency in September reclassified the state’s air quality as being in “severe non-attainment” of federal ozone standards.
“It’s not just about heavy powder days or big raft days,” Glenwood Springs Mayor Jonathan Godes testified during a public hearing. “It’s about the health of our entire city.” The percentage of zero-emission trucks that need to be on the roads increases each year through 2035, and the goals vary for pickup trucks and vans, delivery trucks and semitrailers.