ME LD1138

Department of Environmental Protection must adopt rules by December 31, 2025 establishing greenhouse gas emissions limits for different transportation sector categories, with biennial targets over a 10-year period

Department of Transportation must publish a transportation greenhouse gas emissions reductions plan by July 1, 2026, including strategies to reduce vehicle miles traveled statewide

Beginning July 1, 2026, capacity expansion projects (road widenings, transit modifications designed to increase throughput) require greenhouse gas impact assessments before inclusion in transportation improvement programs

Projects inconsistent with climate targets must be redesigned, include mitigation measures (transit expansion, active transportation infrastructure, congestion pricing, etc.), or be halted

Creates Transportation Climate Technical Committee with representatives from regional planning organizations, transit planners, and emissions modeling experts to advise on achieving transportation sector targets