The development aid community has placed a great deal of emphasis on the need for rural mobility in Sub-Saharan Africa (SSA). Thus far, most development partners and governments in SSA have relied on two overarching assumptions when dispensing transport aid - that most households in rural areas in Africa are not connected to markets and therefore need a road passable for a truck, and that roads with high levels of service are crucial in order to achieve high economic impact. Based on data collection from various sources in three SSA countries, Rural Road Investment Efficiency demonstrates that from a cost-benefit perspective, the additional cost of extending an all-weather road two more kilometers to the farmer's door outweigh the benefits in most cases. Rural Road Investment Efficiency seeks to enhance the effectiveness of aid allocated for rural transport in SSA and calls into question the need for full implementation of all benchmarks set forth in the Rural Access Index (RAI) in SSA. This book will be an essential reference for government supervisory authorities and infrastructure experts throughout the region.