NREL has been working in partnership with UPS for five years to track and evaluate the performance of its hybrid vehicles. The first study, performed in 2008, focused on first-generation hybrid vans operated by UPS in Phoenix. In 2010, UPS deployed 200 second-generation hybrid vans to eight U.S. cities, including the 11 under study in Minneapolis. These second-generation hybrids feature more advanced control algorithms and an “engine off at idle” feature that automatically stops and restarts the engine at stoplights and during other short-stop conditions.
Provided by National Renewable Energy Laboratory.