For decades, Southern California has waged a slow but successful war on smog. Through vehicle emissions rules, clean-fuel standards and other tough measures, officials have lifted the choking pall of ...

California regulators are scrapping a biodiesel rule related to smog concerns that the industry has long said isn't needed.

As "car capitals" go, Detroit—"Motown"—will forever be recognized as the automotive industry's greatest U.S. city, but California arguably is, by all means, the No. 1statefor all things cars and ...

The war on smog has been called one of America’s greatest environmental successes. Decades of emissions-cutting regulations under a bipartisan law — the 1970 Clean Air Act — have eased the choking ...

Starting today, the California Smog Check Program will begin testing vehicles to ensure their vehicle is running either an OEM or California Air Resources Board-approved engine software tune. The ...

The High Desert classic car community is hopeful after hearing that a California bill, which aims to protect vintage vehicles from outdated smog check requirements, is making its way through the ...

Bringing greater efficiency, transparency, and convenience to both drivers and smog check providers in California. San Francisco, California--(Newsfile Corp. - July 8, 2025) - Smog Check Network is ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. California has traditionally tried to tackle the problem by regulating and limiting ...

Despite undeniable progress after decades of smog-abatement measures, the air quality in the Los Angeles Basin continues to be among the worst in the U.S. A new plan to clean the region's air still ...

Three resolutions signed by the President will stop California’s effort to curb emissions. The Alliance for Automotive Innovation has thrown its support behind Trump’s move. California has been ...

California's reign as the U.S. state with the worst air pollution continues as Los Angeles is again the nation's smoggiest metro area, according to a report released Wednesday. LA isn't alone when it ...

Big rig trucks and lawn equipment face stricter pollution requirements under a suite of landmark rules approved today by California’s clean air regulators. Manufacture of new, polluting models of lawn ...