CHICAGO – The Environmental Protection Agency's long-awaited MOBILE6 forecast for light-duty vehicle in-use emissions to 2030 indicates the contribution of Inspection/Maintenance (I/M) vehicle-emissions testing programs is "essentially irrelevant." So says Donald Stedman, director of the University of Denver's Fuel Efficiency Automobile Test Data Center. The study was released in late January and analyzed for Ward’s by researchers at the center. Stedman says the data extracted from ...

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