EPA proposes to loosen requirements for truck pollution controls

The EPA is moving to ease truck pollution controls, after the Trump administration proposed changes to reduce requirements that curb emissions from heavy-duty trucks. The administration says the technical revisions are intended to provide more flexibility for truck companies compared with a Biden-era rule, and could weaken parts of the earlier pollution protections. A key proposal would scale back the time engine manufacturers have to guarantee pollution controls work. The Biden administration had extended that warranty from 100,000 miles to 450,000 miles, while the new proposal would reduce compliance costs by up to 50%, according to an EPA assistant administrator. Overall, the changes are projected to save the industry $12 billion. The rule being altered was updated under the Biden administration for the first time in 20 years, targeting nitrogen oxides linked to respiratory and environmental harm. The administration has also sought broader loosening of vehicle restrictions.