President Obama has directed the U.S. Environmental Protection Agency and the U.S. Dept. of Transportation to create a first-ever national policy to increase fuel economy and likewise decrease greenhouse-gas emissions for medium- and heavy-duty trucks.
This new directive, signed on May 21 and impacting model years 2014-2018, comes about a month after EPA and the National Highway Traffic Safety Administration (NHTSA) had finalized similar rules for passenger cars and light trucks that will be manufactured in 2012-2016.