Washington (CNN) The Environmental Protection Agency will now enforce an Obama-era rule that limits diesel truck emissions, reversing one of the final decisions made under former agency chief Scott Pruitt.

"I have concluded that the application of current regulations ... does not represent the kind of extremely unusual circumstances that support the EPA's exercise of enforcement discretion," acting Administrator Andrew Wheeler wrote in a memo released Thursday.

Without referring to Pruitt by name, Wheeler noted the decision made earlier this month was both proposed and approved by EPA offices on the same day, and that a federal judge has temporarily halted the decision from taking effect.

The decision not to enforce the rule was made because the Trump-era EPA is looking to change a regulation about "glider" trucks.

Glider trucks are new vehicles with old engines, traditionally pulled from vehicles where the body was damaged or broken, such as in a crash. But following the development of tighter emission standards for diesel vehicles in the mid-2000s, glider trucks also became an attractive option to members of the trucking industry seeking to avoid the new technology, which has been criticized as more costly and less reliable.

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