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The Biden administration is on track to propose the toughest-ever U.S. curbs on car pollution, while stopping short of an electric vehicle mandate or ban on gas-powered models.

The U.S. Environmental Protection Agency has granted California environmental regulators waivers to officially move forward with the agency’s aggressive plans to transition diesel trucks to electric vehicles and expand the length of truck warranties.

Senior Republicans are proposing to overturn federal emissions standards targeting heavy-duty commercial vehicles.

In its heyday, Fitzgerald Glider Kits was the nation’s top glider truck manufacturer, building and selling thousands of the new truck cab bodies powered by older rebuilt engines.

The trucking industry urged federal regulators to consider how a proposal to tighten emissions limits on engines will affect motor carriers, as they’re the ones who will ultimately deploy the equipment subject to the new rules.

In an all-day virtual hearing, many of the roughly 140 parties commenting expressed support for the U.S. Environmental Protection Agency’s proposed new rule to tighten nitrogen oxides emissions. Others, however, either viewed the effort as a lost opportunity or attacked it as an overreach.

The U.S. Environmental Protection Agency announced a proposed rulemaking to further restrict emissions of soot-forming nitrogen oxides (NOx) by heavy-duty diesel and gasoline engines starting in model year 2027.

The Biden administration sought to thread the needle between warring oil and renewable fuel interests Dec. 7 by proposing modest quotas for the use of plant-based fuels while moving to block exemptions for dozens of oil refineries.

White House and other administration officials told the Environmental Protection Agency that its industry-backed plan for tightening auto emissions limits was too lax, but the agency rebuffed those warnings and released the proposal with provisions that could lessen its bite.

The Environmental Protection Agency on Aug. 5 announced plans to reduce greenhouse gas emissions and other harmful air pollutants from heavy-duty trucks in a series of major rulemakings over the next three years.