This book constitutes the proceedings of the 13th International Workshop on Communication Technologies for Vehicles, Nets4Cars/Nets4Trains/Nets4Aircraft 2018, held in Madrid, Spain, in May 2018.The 17 full papers presented together with 2 demo papers in this volume were carefully reviewed and selected from numerous submissions.The volume features contributions in the theory or practice of intelligent transportation systems (ITS) and communication technologies for:- Vehicles on road: e.g. cars, tracks and buses;- Air: e.g. aircraft and unmanned aerial vehicles; and - Rail: e.g. trains, metros and trams.
