In August 2011 the U.S. Environmental Protection Agency (EPA) and the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) together issued final rules for the world’s first-ever program to reduce greenhouse gases (GHG) and improve the fuel efficiency of medium- and heavy-duty trucks. Generally referred to as “Phase 1” standards, these regulations apply to new vehicles manufactured in model years 2014 – 2019.
EPA and NHTSA are now formulating a proposal for “Phase 2” rules which will apply to new medium- and heavy-duty trucks manufactured in 2020 and later model years. It is not yet clear how stringent the proposed Phase 2 standards will be, but leading environmental and energy efficiency advocacy organizations are encouraging EPA/NHTSA to set bold fuel efficiency and greenhouse gas targets in Phase 2, based on evidence that there are a suite of cost-effective and commercially available technologies to further improve the efficiency of heavy trucks.
Ceres and EDF commissioned independent consultant MJ Bradley & Associates to examine the financial impact of bold Phase 2 standards for tractor-trailer trucks. This analysis found that strong standards would result in significant cost savings.