text: Belgian Technical Cooperation projects supported road maintenance in Luniungu and Kilunda Secteurs for years.  Perhaps someone with more intimate knowledge of that project can lend a hand on official road numbers, if any.  I see that OSM designates the Bandundu - Camp Bulungu / Poste Kasay road RN 9.  That has been the main dirt north south route, maintained from time to time in the past tens years.  This road, designated RN 18 runs east to the abandoned palm oil plant at Kisia, down to a crossing of the Luniungu River (old Bailey Bridge) and up the south side of the valley, eventually passing Luniungu Secteur (administrative post.)