 The first line would connect the cities and ports of Lagos, Cotonou, Lomé and Accra and would allow the largest container ships to focus on a smaller number of large ports, while efficiently serving a larger hinterland.This line connects gauge and systems, which would require four rail dual gauge, which can also provide standard gauge.The "Trans–West African Coastal Highway" is a transnational highway project to link 12 West African coastal states, from Mauritania in the north-west of the region to Nigeria in the east, with feeder roads already existing to two landlocked countries, Mali and Burkina Faso.