TRANSPORTATION-GREENHOUSE GAS
HB2629, known as the Transportation Choices Act, would create a statewide framework for reducing greenhouse gas emissions from Illinois transportation planning and project selection. It directs the Illinois Environmental Protection Agency, in consultation with the Department of Transportation and metropolitan planning organizations (MPOs), to set transportation-sector greenhouse gas targets by rule and to establish a social cost of carbon. The Department and MPOs would then have to analyze the emissions impacts of their long-range plans, evaluate whether those plans meet the targets, and perform emissions analyses before adding roadway capacity expansion projects to planning documents.
The bill also requires new planning tools and procedures for large projects, including a climate equity accessibility score for projects costing $30 million or more, early and continuous public participation, and a triennial statewide report on progress, challenges, and recommended legislative changes. It creates a Greenhouse Gas in Transportation Working Group and extends the bill’s requirements to the Illinois State Toll Highway Authority and other public highway builders or operators. The measure also amends the Environmental Protection Act to require the EPA to calculate a social cost of carbon and establishes statewide transportation emissions-reduction goals of 50% below 2005 levels by 2031, 80% below 2005 levels by 2050, and net-zero transportation emissions by 2050.
HB2629 would significantly change Illinois transportation planning law by making greenhouse gas reduction a core criterion for state and regional transportation decisions. It would add new duties for IDOT, MPOs, and certain other highway entities to model emissions, account for induced demand, prioritize lower-emission projects, and potentially block or redesign roadway capacity expansions that do not conform to emissions targets. It would also require new reporting, public disclosure, and equity-focused scoring and would amend the Environmental Protection Act to give the EPA authority to establish transportation-sector targets and a social cost of carbon.
No committee transcripts or recorded votes were provided, so there is no direct evidence of debate or formal support/opposition in the available record. Based on the bill text alone, the measure appears strongly climate-forward and planning-intensive, with an emphasis on emissions reduction, equity, and public participation. The structure of the bill suggests support from environmental and transit-oriented advocates, while likely drawing concern from roadway, freight, and project-delivery interests because it can restrict or delay capacity-expansion projects and impose new analytical and funding requirements.
The main points of contention are likely to be the bill’s limits on roadway capacity expansion, its requirement to account for induced demand, and its ability to prevent projects from advancing unless they meet greenhouse gas and VMT targets or are offset by mitigation measures. Another likely area of dispute is the climate equity accessibility score and the bill’s use of the social cost of carbon, which could shift funding away from traditional highway projects toward transit, biking, walking, and other mitigation measures. The bill also raises implementation concerns for IDOT and MPOs because it imposes detailed modeling, reporting, public participation, and coordination obligations, and it extends those requirements to the tollway authority and public-private highway operators.