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  • Public Filings and Testimony
  • Transportation
  • Jun 17, 2023

    Comments on EPA’s Phase 3 Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles

    ACEEE filed comments in response to an EPA notice of proposed rulemaking, “Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles – Phase 3 ” ( 88 FR 25926). To stave off the worst im…

    Related Resources

    Maximizing State Transportation Investments: How Redirecting Spending from Highway Expansion to Public Transit Supports Economies and Communities
  • Research Report
  • Energy Efficiency Policy
  • Transportation
  • Maximizing State Transportation Investments: How Redirecting Spending from Highway Expansion to Public Transit Supports Economies and Communities

    Costs to deliver transportation projects have risen drastically in recent years. To avoid wasteful spending, each new dollar invested in transportation infrastructur…

    May 13, 2026

    Support the Work That Makes Energy Go Further

    ACEEE’s independent research and advocacy depend on the support of foundations, businesses, and individuals committed to a cleaner, more affordable energy future for all Americans.