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

New Legislation, Backed by Bike Safety Groups, Proposed to Regulate E-Motos/E-Bikes

“Electric bicycles are transforming how Californians get around, but the rapid rise of high-powered electric devices has created confusion that puts people at risk,” said Marc T. Vukcevich, Director of State Policy for Streets For All

February 23, 2026

Monday’s Headlines

Money for trains edition.

February 23, 2026

Study: Most Of America’s Paint-Only Bike Paths Are On Our Deadliest Roads

Even worse, most Americans see these terrible lanes and think, "I'd be crazy to ride a bike" — and the cycle continues.

February 22, 2026

Metro Committee Approves Additional Early Construction Funding for Union Station Run-Through Tracks

Link US is a huge undertaking which includes building a new bridge over and along the 101 Freeway.

February 20, 2026

Friday’s Headlines

It's mostly a good news headlines stack. That's nice.

February 20, 2026

Advocates Breathe Sigh of Relief: Transit Disaster Averted for Now

Governor Newsom signs Bay Area public transit loan to prevent severe service cuts.

February 20, 2026
See all posts