The purpose of the STSD project was to regulate, organise, promote and finance improved inter-regional and continental transport infrastructure & services, through interconnectivity across regions by promoting safe transboundary transport corridors and harmonised transport policies.The expected results were: 1. Support to the African Union Commission's Department of Infrastructure and Energy in transport policy harmonization and transport sector services development. 2. Support to the Programme for Infrastructure Development for Africa (PIDA) Priority Action Plan for the start-up of smart corridor activities. 3. Support to the Infrastructure Consortium for Africa (ICA/AfDB) for implementing its strategic business plan. 4. Editing and publishing of comprehensive transport sector guidelines.