This map contains state laws and regulations that affect medium- and heavy-duty vehicles. The policies include the following:
Note that the policies highlighted here target medium-duty and/or heavy-duty vehicles specifically. Thus, some policies by states apply to all vehicles including medium- and heavy-duty vehicles but are not included here. We describe policies for biofuels  and low carbon fuel standards  in other state maps. Source: U.S. Department of Energy Alternative Fuels and Advanced Vehicles Data Center. The website contains a database for federal and state incentives and laws. Here is a link  to the search query for these results.