Code of Federal Regulations Title 40. Protection of Environment § 40.86.410–90 Emission standards for 1990 and later model year motorcycles

(a)(1) Exhaust emissions from 1990 and later model year gasoline-fueled, natural gas-fueled and liquefied petroleum gas-fueled motorcycles shall not exceed (compliance with these standards is optional prior to the 1997 model year for natural gas-fueled and liquefied petroleum gas-fueled motorcycles):

(2) Exhaust emissions from 1990 and later model year methanol-fueled motorcycles shall not exceed:

(3) The standards set forth in paragraphs (a) (1) and (2) of this section refer to the exhaust emitted over driving schedule as set forth in subpart F and measured and calculated in accordance with those procedures.