Today, the transport cost barriers are higher than tariff barriers. Table 4.1 presents the costs for some corridors. According to a recent USAID study (2012), transport costs on the Lome-Ouagadougou corridor vary between USD 2 201 and 5155, depending on the direction of trade. Exporting, north-south movements, is cheaper and faster, which is explained by smaller quantities of goods and more competition.