Transportation 19

 May 21, 2010, Obama signed a presidential memorandum that directs the DOT and EPA to develop national standards for fuel economy and greenhouse gas emissions for heavy- and medium-duty trucks. The memorandum effectively endorses the recommendation made by ATA Sustainability Task Force.  The ATA's 2008 recommendation called for national fuel economy standards for trucks in order to reduce greenhouse gas emissions.   The president stated that the new regulations should be completed by 2011 and will go into effect in 2014.