This dataset is the result of a geospatial model that simulates how individuals and traded goods are moved in COD, taking both roads and navigable rivers into account. The Highway Development and Management Model was used to estimate the cost of the road network. The points of origin for the analysis were created by dividing the territory into more than 27,000 cells of approximately 10 kilometers on a side and estimating their centroid. Then, transport cost to the local market was estimated by calculating every possible transport route from every cell centroid to every possible market, and selecting the cheapest route-market combination as the most likely route to a destination.
Full report here: http://documents.worldbank.org/curated/en/952691468195575937/Economic-bo...