Planning Assistance in Action
by Kristen E. Humphrey, MLA, Development and Infrastructure Planner
with Tim Shepherd, MDE, Division Chief, Mobile Sources Control Program, MDE
Whether or not we are Volkswagen owners, most of us will remember the VW emissions scandal – sometimes called “dieselgate” – that was revealed to the world a little more than four years ago. Fewer will be able to recall, however, what occurred once the publicity died down and the dust settled after the numerous lawsuits that followed.
In 2014 the California Air Resources Board (CARB) noticed significant differences in nitrogen oxide (NOx) emissions between European and U.S. models of VW’s diesel vehicles. Researchers for CARB identified that emissions were considerably lower during regulatory testing than they were during real-world driving. In response to the discovery, the U.S. Environmental Protection Agency (USEPA) found Volkswagen to be in violation of the Clean Air Act in 2015 and they, and regulators around the world, began to investigate. Continue reading