GMS transport initiatives seek to develop the priority transport corridors that connect the subregion together and to provide transport links to population centers, tourist destinations, markets, and other centers of economic activity. This will promote trade, tourism, investment, and access to social and other services. The principal transport corridors form the base of the three major GMS economic corridors, namely: (i) the North–South Economic Corridor, (ii) the East–West Economic Corridor, and (iii) the Southern Economic Corridor (see map).