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Emissions Standards

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DOJ Halts Criminal Cases Over Vehicle OBD ‘Defeat Devices,’ Shifts to Civil Enforcement

The directive pivots enforcement to civil actions, citing an untested Clean Air Act interpretation.

‘Diesel Brothers’ Host Heavy D Arrested on Contempt Order in Clean Air Act Case

California Kills 'Leno’s Law,' Ending Bid for Rolling 35-Year Smog Exemption

Illinois Launches South Side Mobile Emissions Testing Pilot in Chicago

Justice Department and Major Truckmakers Sue to Halt California’s Clean Truck Partnership

Supreme Court Grants Fuel Producers Right to Sue Over California Emissions

Trump Revokes California’s Emissions Waiver, Prompting Multistate Lawsuit

Senate Overturns California's Vehicle Emissions Waiver, Sending Resolution to Trump