Skip to Content
Streetsblog California home
Streetsblog California home
Log In
CA Air Resources Board (CARB)

California Joins Seven Other States in Lawsuit Over Clean Transportation Rules

Eight states filed a lawsuit this week challenging the Trump administration decision to suspend a rule that requires transportation projects to measure and report greenhouse gas emissions produced.

The lawsuit, similar to one filed by the Natural Resources Defense Council (NRDC) this summer, argues that the rule suspension violated the law by failing to provide notice and opportunity to comment on the suspension before it took place. The rule was scheduled to take effect in February, but the administration delayed it twice before suspending it indefinitely in May.

On NRDC's site, Amanda Eakin writes:

The Greenhouse Gas Measure was promulgated under the Moving Ahead for Progress in the 21st Century (MAP-21) Act and would require state departments of transportation to benchmark and measure on-road greenhouse gas emissions within their jurisdictions, and set locally appropriate targets for GHG emissions reductions on national highways. MAP-21 requires the Federal Highway Administration to set goals in several performance areas to ensure the most efficient use of federal funds. The goal of the measure is to incentivize use of transportation strategies—such as bus rapid transit and commuter rail—that would reduce GHG emissions.

That's because having to measure and report on GHG emissions would show how much more harm highway widening projects bring in terms of real health impacts than other transportation investments such as transit. Eakin continues:

Transportation is the leading source of carbon pollution in the United States and limiting pollution from our transportation system is a cornerstone of making our air cleaner, improving health for all Americans, and fighting climate change. The simple but profound premise behind our original advocacy to secure a national GHG performance measure is that transportation plans must be more accountable for performance outcomes, including carbon pollution. This premise was at the center of the Sustainable Communities and Climate Protection Law (SB 375) California passed in 2008, which has led to substantial health, safety and climate benefits for communities across the state.

The states participating in the suit are California, Iowa, Maryland, Massachusetts, Minnesota, Oregon, Vermont, and Washington.

Read more here and here.

Stay in touch

Sign up for our free newsletter

More from Streetsblog California

Thursday’s Headlines

Posted from the Oakland airport. I don't have any more travel until the end of the year so we'll be on a "normal schedule" until 2026.

November 20, 2025

Talking Headways Podcast: Emotional Consumption in China

High-speed rail has completely transformed the country. Think about that sentence: "High-speed rail has completely transformed the country." When was the last time something positive like that happened here?

November 20, 2025

Want Vancouver Skytrain in San Diego? Support People Mover to the Airport.

Vancouver is not alone in running people movers on urban rail networks. Copenhagen built its entire 26.9-mile metro using the same technology used on a Saudi Arabian university’s APM.

November 20, 2025

Cutting Federal Transit Funding Won’t Close Budget Gaps — But Will Make Transportation Less Affordable

The Trump administration's proposal to eliminate the mass transit account of the Highway Trust Fund would be short-sighted, ineffective, and ruinous, a new analysis finds.

November 19, 2025

Driver Kills Cyclist at Alemany and Naglee

Wide, high-speed street with painted bike lanes and no protection leads to inevitable outcome. This was not an accident.

November 19, 2025

Pomona North Metro Station to get Protected Bike Connection

The two-way cycle track will run a little under two miles, and also link with bike facilities in Claremont.

November 19, 2025
See all posts