Transportation and Climate Alignment Act draws wide support and pointed opposition in Appropriations hearing

Feb 10, 2026

HB 437 would require MDOT to assess greenhouse gas impacts of major highway capacity projects and pair large expansions with mitigation or multimodal investments; environmental groups, public-health advocates and some transit unions backed the bill, while business groups warned of high costs and practical challenges.

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Delegate Mark Edelson presented HB 437, the Transportation and Climate Alignment Act (TCA), which would require MDOT to evaluate the greenhouse‑gas impacts of major transportation projects and to design large highway expansions (projects costing more than $100 million) with offset or multimodal measures to avoid net increases in emissions. Sponsors said the bill is forward‑looking and would not apply to projects already funded for construction or with NEPA records of decision.

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