https://www.autoblog.com/2018/07/18/cou ... er-trucks/
A federal appeals court on Wednesday temporarily blocked a decision by the Environmental Protection Agency that would have lifted strict limits on the number of remanufactured heavy-duty vehicles known as "glider trucks."
The big rigs in question have older, used engines installed into otherwise new trucks. Rules introduced under former President Obama said nearly all new trucks on the road must use more-efficient, less-polluting engines.
The glider trucks emit up to 450 times more diesel particulate matter and up to 40 times more smog-forming nitrogen oxides than new trucks on the market, the EPA has said.
The EPA issued a memo on July 6 — Scott Pruitt's last day as head of the agency — that said the agency would not enforce a limit of up to 300 gliders per manufacturer . . . The EPA, which said Wednesday it was reviewing the court's decision, had said in its memo that enforcing the rules would result "in the loss of jobs" and threaten the viability of companies making the glider trucks.
Volvo Group North America, Cummins and Navistar International and others said last year they opposed efforts to reverse the limits on glider trucks. Glider kits "should not be used for circumventing purchase of currently certified powertrains." The move could inflict "uncertainty and damage to our industry," the companies said.
But Pruitt, as head of the EPA, granted an exemption to the limits as an apparent political favor to the Fitzgerald family of Tennessee, political donors who run several glider-truck dealerships. . . .
Environmental Defense Fund President Fred Krupp said the "decision today is an important step towards protecting the health of all Americans from super-polluting diesel freight trucks."
The U.S. Court of Appeals for the District of Columbia said the EPA must respond to the lawsuit from environmental groups by July 25. The court order said the "stay is to give the court sufficient opportunity to consider the emergency motion" and not a ruling "on the merits" of blocking the memo.
The EPA has previously said that if gliders were allowed through 2025, they would make up 5 percent of the freight trucks on the road but would account for one third of all nitrogen oxides and particulate matter emissions from the heavy truck fleet. . . .