This report presents the midterm review and update of the Greater Mekong Subregion (GMS) Transport Sector Strategy 2030, providing a road map for cooperation in the GMS transport sector up to 2030. The strategy covers 2018-2030, and this report includes plans for the second half of the implementation period. It considers progress and evolving issues and challenges, aiming to enhance the strategy's contribution to the achievement of the GMS vision of a more integrated, prosperous, sustainable, and equitable subregion.