SACRAMENTO, California — Massachusetts is joining Oregon in delaying its compliance with California’s clean-engine rules for heavy-duty trucks, Massachusetts’ air regulator announced Friday.
Massachusetts will delay enforcement of its Heavy-Duty Low NOx Omnibus rule from 2025 to 2026, Massachusetts Department of Environmental Protection Commissioner Bonnie Heiple said in a Friday letter.
There aren’t enough cleaner-burning engines available, Heiple said, to comply with the law, which requires that the new engines emit 75 percent less NOx and 50 percent less particulate matter compared with 2023.
The state is also exempting snow plows and street sweepers for the next two years from California’s Advanced Clean Trucks rule, which requires manufacturers to sell zero-emission vehicles in increasing percentages, according to the letter.
