Maryland Attorney General Anthony G. Brown has joined a coalition of Attorneys General and cities in moving to intervene in lawsuits challenging decisions by the U.S. Environmental Protection Agency (EPA) that authorize California to establish regulations that would speed the adoption of zero-emission trucks and reduce emissions from fossil fuel-powered heavy-duty vehicles.
The regulations would help the states tackle climate and air quality challenges by reducing greenhouse gases, nitrogen oxides, particulate matter, and other emissions from medium- and heavy-duty vehicles. In the latest challenges, trucking and petroleum industry groups are among those challenging EPA’s decision to grant California’s request for “waivers of preemption,” which allowed these regulations to move forward in California and opened the door for other states to adopt them as well. Pursuant to the Clean Trucks Act of 2023, the Maryland Department of the Environment is finalizing regulations, which incorporate California’s standards by reference.