The Kyoto Protocol, which entered into force on February 6th 2005,  established three innovative “mechanisms” designed to help countries with reduction commitments cut the cost of meeting their emission targets. The Clean Development Mechanism (CDM) is related to projects realized in developing countries with GHG reductions sold to countries with reduction commitments. This module focuses on CDM and the GHG market; CDM transport projects; core elements of a transport methodology; and case studies in CDM.