"CARB establishes state air quality regulations which protect public health by addressing all major sources of smog-forming air pollution, and other forms of air pollution. As a result, cars today are 99 percent cleaner than in the 1970s, resulting in less air pollution overall, shorter hospital stays and fewer days missed from school and work due to respiratory and cardiopulmonary diseases.
California regulations, based on extensive research and sound science, have driven innovation, leading to significant technological developments such as the catalytic converter (which helped slash ozone by 60 percent), and the production of highly marketable low- and zero-emission cars and trucks, and cleaner fuels.
The Global Warming Solutions Act of 2006 (Nunez) expanded CARB’s role to development and oversight of California’s main greenhouse gas reduction programs. These include cap-and-trade, the Low Carbon Fuel Standard and the zero-emission vehicle (ZEV) programs. As a result of these efforts, the state is on track to roll back carbon emissions to 1990 levels by 2020. With the passage of additional laws (such as SB 32 in 2014 and AB 398 in 2017), CARB is now mapping out how these programs and others can help California reach its next target: reducing greenhouse gas emissions an additional 40 percent below 1990 levels by 2030. The ultimate goal for California is to reduce greenhouse gases 80 percent below 1990 levels by 2050."