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

USEPA Considers Allowing Dirty Trucks; CARB Fights Back

Image: U.S. Environmental Protection Agency, via Wikimedia Commons

Note: GJEL Accident Attorneys regularly sponsors coverage on Streetsblog San Francisco and Streetsblog California. Unless noted in the story, GJEL Accident Attorneys is not consulted for the content or editorial direction of the sponsored content.

Streetsblog USA just reported that the federal government is considering gutting truck safety rules put in place under the Obama administration. Meanwhile another federal agency is considering repealing a truck regulation put in place two years ago that protects air quality and public health.

The US EPA is considering repealing a rule that prevents high-polluting, older truck engines from being repackaged and sold as “new trucks.” Specifically, the current rule limits the use of what are called “glider kits” that allow a truck to put a refurbished diesel engine into a new truck chassis and call it a new truck. The rule was developed as part of the federal Phase 2 greenhouse gas regulations.

The California Air Resources Board, which worked closely with the EPA for three years to put together the new regulations, put out a press release charging that many of the refurbished engines in the kits are older engines that don't meet current emissions standards, especially California's. “As a result, compared to current clean trucks, they emit massive amounts of smog-forming pollution and toxic carcinogenic soot, directly impacting public health,” according to the press release.

Steve Cliff, Deputy Executive Officer for CARB, testified at a public hearing in Washington this week against repealing the rule. His testimony points out that the emissions increase from the proposed repeal could be “enormous,” and that a repeal would be unfair to those truck manufacturers who have worked to comply with emissions requirements.

“Gliders are so much higher emitting than modern trucks that even if only a small number of them operate in California, California’s overall air quality progress will be impeded,” said Cliff.

“For example, if gliders made up only seven percent of the total medium and heavy duty trucks in California, that would completely offset the benefits of California’s in-use diesel fleet rules, including our Truck and Bus rule, putting California’s citizens at risk and making it impossible for California to meet health based air quality standards.”

“In short, a repeal puts our most disadvantaged communities at risk by walking away from the commitment to reduce their exposure to smog-forming and toxic pollutants that impact public health leading to hospitalizations, asthma cases, lost work and school days, and premature deaths.”

Cliff also argued that a repeal would be illegal.

EPA is basing its decision to repeal the requirements for gliders on a proposed reinterpretation of the federal Clean Air Act that ... is in direct conflict with the interpretation EPA itself used less than two years ago when drafting the final Phase 2 regulation. It is inconsistent with the fact that glider vehicles are being manufactured, marketed, and sold as “new” vehicles, and is inconsistent with the language and purpose of the statute.

Mary Nichols, CARB chair, sent out a tweet:

Many other organizations also testified at the hearing, among them the Environmental Defense Fund. The EPA will accept public comments through January 5.

Support journalism that covers the issues you want to know about. Streetsblog California reports on issues few media outlets cover, and we can't do it without you. Click here to donate today.

Stay in touch

Sign up for our free newsletter

More from Streetsblog California

CA Approves $1.1 Billion in Transportation Grants, Including Zero-Emission Transit

“We are pleased to partner with Caltrans to enhance the economic competitiveness of our state and make commuting more affordable, while protecting our environment,” said California Transportation Commission Chair Darnell Grisby.

December 11, 2025

Thursday’s Headlines

State invests in zero-emission transit, CAHSRA fights for federal funds, LA sinks into unintentional self-parody, and more...

December 11, 2025

Eyes on the Street: G Line Busway Bridge Over Van Nuys Blvd

Metro G Line upgrades are expected to be complete in 2027.

December 10, 2025

Hooray! Direct Payment Finally Comes to Bay Area Transit

Advocates and officials celebrate as the Bay Area finally joins New York, London, Toronto, and other cities with a modernized fare-payment system.

December 10, 2025

What Is an E-Bike, and What’s an Unlicensed Motorcycle: A Parents’ Guide

The holiday shopping guide for anyone in the e-bike market.

December 10, 2025

Wednesday’s Headlines

YIMBYs, and Widenings, and Bike Cops, oh my!

December 10, 2025
See all posts