The Institution for Transport Policy Studies has been engaged in the three-year “Study of Long-Term Transport Action Plan for ASEAN” since FY2011, with full support from the Nippon Foundation. This study aims to recommend long-term action plans to reduce CO2 emissions from the transport sector in each ASEAN country and the ASEAN as a whole, with the cooperation of researchers and research institutes in the ASEAN and international and other organizations with outstanding experience in the transport and environment sector, such as Clean Air Asia.