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7/6/2015 4:00:00 AM Write a Letter to the Editor Write a letter to the Editor

TT Archives: Trucks and Emissions

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The starting point for limiting diesel emissions can be traced to a provision in a bill reauthorizing and expanding the Clean Air Act of 1977 that was signed into law by President George H.W. Bush in 1990.

That law led to the adoption of a series of emissions-control technologies in 2002, 2007 and 2010 and now has given way to newly proposed federal fuel efficiency standards for medium- and heavy-duty trucks.

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