California Legislature Considering Bill Requiring Smog Testing for Motorcycles
Green Car Congress
MAY 4, 2009
The original 1975 standards applied to hydrocarbons (HC), one of the two most important contributors to smog, and carbon monoxide (CO), a toxic air pollutant. The original HC standards ranged from 5.0 These new standards applied to 1988 model year and later bikes and could be met on a corporate average basis. g/km HC standard.
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