The motorcycles are subject to certification by the U.S. Environmental Protection Agency (EPA) for compliance with applicable emissions and noise standards and by the State of California Air Resources Board (CARB) with respect to CARB’s more stringent emissions standards. Motorcycles sold in California are also subject to certain tailpipe and evaporative emissions standards that are unique to California. The EPA finalized a new tailpipe emissions standard for 2006 and 2010 respectively which are harmonized with the California emission standards. Additionally, Harley-Davidson motorcycles must comply with the emissions, noise, and safety standards of the European Union, Japan, and other international markets.