CALIFORNIA: Greenhouse Gas Legislation for Vehicles

The chart above shows the percentage contributions of each major sector comprising California's global warming emissions. In this state, if you want to affect greenhouse gas emissions, you have to make changes to the exhaust of automobiles.

From the Union of Concerned Scientists:

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California Regulates Global Warming Emissions from Motor Vehicles
California’s Vehicle Global Warming Law

On July 22, 2002 California Governor Gray Davis signed into law AB 1493 (commonly known as the "Pavley law")—precedent-setting legislation to reduce global warming pollution from motor vehicles.

This bill directs the California Air Resources Board (CARB) to develop and adopt regulations that achieve the maximum feasible and cost-effective reduction of greenhouse gas emissions (GHG) from passenger cars and light trucks sold in California.

Regulations were developed during 2004 through a series of public workshops and hearings, and were adopted by the California Air Resources Board on September 24, 2004. Regulations will apply only to 2009 and later model year vehicles and will require about a 30% reduction of greenhouse gas emissions by 2016.


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