Federal prosecutors in Sacramento on Thursday unsealed an indictment charging 12 people from around the state with violating the Clean Air Act in what they portrayed as a long-running, sophisticated ...

SMOG checks or emission tests exist due to the U.S. Environmental Protection Agency's (EPA) regulation on passenger vehicles. Each state sets limits of nitrogen oxides (NOx) from emitting past certain ...

Smog laws don't have to prevent you from making horsepower, as long as you use the correct parts, build the engine the right way, and tune it until it delivers a clean exhaust. It is true however, ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. Jay Leno’s star power wasn’t enough ...

Add Yahoo as a preferred source to see more of our stories on Google. Smog hangs in the air as the sun sets after a hot day in the Los Angeles Basin on Wednesday, Oct. 4, 2023. (Luis Sinco / Los ...

The Assembly Appropriations Committee on Friday blocked Bakersfield Republican Sen. Shannon Grove’s Senate Bill 712 from advancing for a full vote. Leno had testified in support of the measure in ...

Jay Leno’s star power wasn’t enough to persuade a California legislative committee to pass a measure to allow owners of classic cars like him to be exempted from the state’s rigorous smog-check ...