Border posts are notorious for enabling informal arrangements between government officials and private actors. They encourage several corrupt practices from extracting bribes for border passage from small traders to clientelist relationships with larger vendors and merchants active in import-export activities. These practices are even more constraining for traders for whom these formalities must be repeated with different officials at different parts of their journeys. Sub-Saharan Africa contains 59 of these posts, with considerable variation in degree of implementation and configuration.