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  2. California Smog Check Program - Wikipedia

    en.wikipedia.org/wiki/California_Smog_Check_Program

    The American flag stands against the backdrop of a smoggy Los Angeles in 1972. The California Smog Check Program is an attempt to reduce smog in California. The California Smog Check Program requires vehicles that were manufactured in 1976 or later to participate in the biennial (every two years) smog check program in participating counties. [1]

  3. 2008 California Statewide Truck and Bus Rule - Wikipedia

    en.wikipedia.org/wiki/2008_California_Statewide...

    The Truck and Bus Rule is considered by the Air Resources Board and other organizations such as the Union of Concerned Scientists and the Environmental Defense Fund as a win-win for the State of California: reducing global greenhouse gas emissions, reducing fuel use, providing fuel and operating cost-savings for truck owners, and reducing smog-forming pollution, in addition to providing human ...

  4. United States vehicle emission standards - Wikipedia

    en.wikipedia.org/wiki/United_States_vehicle...

    more than 2 model years old to 24 model years old; motorcycles, diesel-powered, and automobiles 25 model years or older exempt from emission testing – includes motor vehicles registered as an Antique or Classic under Texas law (either displaying state-mandated vanity license plate or vintage-era license plates (this also includes past general ...

  5. Will California sell gas cars after 2035? Nobody knows ... - AOL

    www.aol.com/california-sell-gas-cars-2035...

    The Clean Air Act prevents states from setting different rules from the federal government — though as California has historically dealt with unique smog problems, the law provides an exemption ...

  6. California OKs landmark ban on sales of diesel big-rig trucks ...

    www.aol.com/news/death-knell-diesel-california...

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  7. California Approves Regulation to Phase Out Diesel ... - AOL

    www.aol.com/news/california-approves-regulation...

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  8. Vehicle inspection in the United States - Wikipedia

    en.wikipedia.org/wiki/Vehicle_inspection_in_the...

    Vehicle emissions inspection station in Wisconsin. Arizona – biennially, in Phoenix and Tucson metro areas only, depending on age and type of vehicle. [28]California – biennially for all vehicles from out-of-state, regardless of age; and all vehicles made after 1975 which are more than six years old in all or some zip codes in 41 out of 58 counties.

  9. California voted to ban new diesel trucks at ports. Why did L ...

    www.aol.com/news/california-voted-ban-diesel...

    While California waits for the EPA to act, more than 1,200 trucks have obtained new registrations to move cargo at the ports of Los Angeles and Long Beach this year; 90% run on diesel.