This report is the second in a series of studies on transport and aid effectiveness in Sub-Saharan Africa. It follows a study on transport costs and prices along the main international trade corridors (Teravaninthorn and Raballand 2008). One of the principal findings of the research on international corridors in Africa was that trucking market structure and regulation differ widely among sub-regions in Sub-Saharan Africa; therefore, transport prices (but not necessarily transport costs)1 differ greatly among sub-regions and corridors. The trucking environment and market structure in West and Central Africa are characterized by cartels offering low transport quality, whereas in East Africa, the trucking environment is more competitive and the market is more mature. Much of the transport price burden along African corridors seems to depend on the political economy of freight logistics.