"The research the Environmental Protection Agency (EPA) cited in proposing to roll back a major truck pollution rule was “not accurate,” the university that conducted the study has concluded.
Tennessee Tech University’s conclusions, outlined in a letter Tuesday to the EPA, came after an academic review of the controversial research into the emissions of “glider” trucks.
The heavy-duty trucks use new bodies and remanufactured, older engines that do not meet current EPA regulations. Environmentalists call them "super-polluting" trucks, citing research showing far higher emissions compared to new vehicles."
Source: The Hill, 10/26/2018