This document constitutes a final report of research by Oak Ridge National Laboratory in collaboration with staff of the Ministry of National Economy, Government of Tunisia toward a complete evaluation of transportation energy use and efficiency in Tunisia. The report includes chapters on highway passenger, marine, and rail transportation which are substantially complete. Additional data on taxis, louages (intercity taxis) and privately owned large trucks remain to be gathered. Some key tables have been included. Data for an analysis of the air and pipeline modes were not collected. The major achievement of this report is a detailed analysis of the National Survey of Vehicle Energy Use, and extensive survey of automobiles and light trucks under 3.5 tonnes. Though the data have some significant shortcomings they provide valuable insights into the energy use and efficiencies of this most important transport mode. This study by no means exhausts the usefulness of this data base for energy use and conservation analysis. The National Survey will very likely serve as a valuable resource for research studies for years to come.