A group of 15 states and the District of Columbia agreed to collaborate on advancing and accelerating the market for electric medium- and heavy-duty vehicles, including large pickup trucks and vans, delivery trucks, box trucks, school and transit buses, and long-haul delivery trucks (big-rigs). The goal of this initiative is to ensure that 100 percent of all new medium- and heavy-duty vehicle sales be zero emission vehicles by 2050, with an interim target of 30 percent zero-emission vehicle sales by 2030.  States signing the memorandum of understanding include: California, Connecticut, Colorado, Hawaii, Maine, Maryland, Massachusetts, New Jersey, New York, North Carolina, Oregon, Pennsylvania, Rhode Island, Vermont, and Washington D.C.