A motor vehicle pollution control device designed to reduce emissions such as oxides of nitrogen,hydrocarbons and carbon monoxide. Catalytic converters have been required equipment on all new motor vehicles sold in California since 1979
California Air Resources Board ARB (California Environmental Protection Agency), glossary of air pollution terms, Sacramento, CA, USA 2013. http://www.arb.ca.gov/html/gloss.htm, (Air Pollut - Amer) {594}