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FILE - Motor vehicle traffic moves along the Interstate 76 highway in Philadelphia, March 31, 2021. The EPA on Friday, March 29, 2024, set new greenhouse gas emissions standards for heavy-duty trucks, buses and other large vehicles, an action that officials said will clean up some of the nation's largest sources of planet-warming pollution. (AP Photo/Matt Rourke, File)
FILE - Environmental Protection Agency Administrator Michael Regan speaks on Capitol Hill, Sept. 27, 2023, in Washington. The EPA on Friday, March 29, 2024, set new greenhouse gas emissions standards for heavy-duty trucks, buses and other large vehicles, an action that officials said will clean up some of the nation's largest sources of planet-warming pollution. "Our Clean Trucks plan works in tandem with President Biden's unprecedented investments in America and delivers on this administration's commitment to tackling climate change while advancing environmental justice,'' Regan said. (AP Photo/Mark Schiefelbein, File)
FILE - A tanker truck transports crude oil on a highway near Duchesne, Utah on July 13, 2023. The EPA on Friday, March 29, 2024, set new greenhouse gas emissions standards for heavy-duty trucks, buses and other large vehicles, an action that officials said will clean up some of the nation's largest sources of planet-warming pollution. (AP Photo/Rick Bowmer, File)