With our free press under threat and federal funding for public media gone, your support matters more than ever. Help keep the LAist newsroom strong, become a monthly member or increase your support today.
Heavy Trucks Cause Much Of Our Air Pollution. A New State Rule Aims To Change That

Shocking no Angeleno who’s ever been outside, Los Angeles has the worst smog in the nation (again). And California counties lead the U.S. in long-term particulate matter pollution.
The main culprit behind our air quality woes? The big diesel-burning trucks that keep our economy moving. Trucks are responsible for about 70% of the air pollution that we breathe in on a regular basis, according to the California Air Resources Management Board (CARB).
That’s why yesterday, CARB passed a new regulation to start phasing out fossil fuel-fueled trucks in favor of zero-emission electric ones.
The new rule requires truck manufacturers to begin shifting production to electric vehicles, starting in 2024. The goal is for all new trucks sold in California to be zero-emission by 2045.
Studies show that air pollution disproportionately harms Latinos, African Americans, Asian Americans and low-income communities. And a recent study out of Harvard linked more air pollution exposure to higher death rates from COVID-19.
In a statement, CARB Chair Mary D. Nichols said the move is long overdue and will help address inequity across the state.
“For decades, while the automobile has grown cleaner and more efficient, the other half of our transportation system has barely moved the needle on clean air. Diesel vehicles are the workhorses of the economy, and we need them to be part of the solution to persistent pockets of dirty air in some of our most disadvantaged communities."
- What's It Like To Breathe LA's Bad Air (And What Can You Do About It)?
- LA Has The Worst Air In The Nation Again
- Vehicle Emissions Have Dropped (Duh), But The Effect On SoCal's Air Is Complicated
- Take A Deep Breath And Read About How Bad LA Smog Really Is
Our news is free on LAist. To make sure you get our coverage: Sign up for our daily newsletters. To support our non-profit public service journalism: Donate Now.
At LAist, we believe in journalism without censorship and the right of a free press to speak truth to those in power. Our hard-hitting watchdog reporting on local government, climate, and the ongoing housing and homelessness crisis is trustworthy, independent and freely accessible to everyone thanks to the support of readers like you.
But the game has changed: Congress voted to eliminate funding for public media across the country. Here at LAist that means a loss of $1.7 million in our budget every year. We want to assure you that despite growing threats to free press and free speech, LAist will remain a voice you know and trust. Speaking frankly, the amount of reader support we receive will help determine how strong of a newsroom we are going forward to cover the important news in our community.
We’re asking you to stand up for independent reporting that will not be silenced. With more individuals like you supporting this public service, we can continue to provide essential coverage for Southern Californians that you can’t find anywhere else. Become a monthly member today to help sustain this mission.
Thank you for your generous support and belief in the value of independent news.

-
What do stairs have to do with California’s housing crisis? More than you might think, says this Culver City councilmember.
-
Yes, it's controversial, but let me explain.
-
Doctors say administrator directives allow immigration agents to interfere in medical decisions and compromise medical care.
-
The Palisades Fire erupted on Jan. 7 and went on to kill 12 people and destroy more than 6,800 homes and buildings.
-
People moving to Los Angeles are regularly baffled by the region’s refrigerator-less apartments. They’ll soon be a thing of the past.
-
Experts say students shouldn't readily forgo federal aid. But a California-only program may be a good alternative in some cases.