Katherine Farrow co-ordinated the editorial process of the report. Statistical and research assistance was provided by Ashley Acker and Mario Barreto. Michael Kloth edited the report and supervised the publication process, Edwina Collins copy-edited the manuscript and Ana Cuzovik designed several visual elements included in the publication. The team also thanks for the help provided by colleagues of ITF for their valuable comments: Olaf Merk for his participation in the freight chapter, Jagoda Egeland for her participation in the non-urban passenger chapter, Katja Schechtner on drones, and Wei-Shiuen for her contributions to material on the electrification of personal mobility. The modelling approach was inspired by Andreas Shaffer (University College of London), Lóránt Tavasszy (Delft University of Technology) and Alan McKinnon (Kühne Logistics University). The ITF also benefited from the help provided by the following bodies of the OECD: the Environment Directorate for the trade projections and the International Energy Agency for their knowledge and model on vehicle and fuel technology (Mobility Model). Several partners have been valuable developing the ITF modelling framework, methodologies and providing data: The International Council for Clean Transportation (ICCT) for data on local pollutant emissions; The International Maritime Organization (IMO) for data on vessel fleet composition and vessel speed data; The Energy and Resources Institute India, (TERI), China Academy of Transportation Sciences, Japan International Cooperation Agency (JICA); Economic Commission for Latin America (ECLAC) and Development Bank of Latin America (CAF) for data on Latin American cities and trade; the Road Freight Lab of World Business Council on Sustainable Development (WBCSD) on the freight optimisation; and the International Civil Aviation Organisation (ICAO) and the Airport Council International Europe (ACI Europe) for their help with aviation forecasts and emissions. Finally, the ITF Transport Outlook 2019 benefited from valuable comments from the members of the Transport Research Committee, which also approved the report.