The EU project OPTIC is closed, but the reports are still available on this website.
German Aerospace Center (DLR)
Department of Transport, Technical University of Denmark (DTU)
Institute for Technology Assessment and Systems Analysis (FZK)
Royal Institute of Technology (KTH)
Oxford University, Centre for the Environment, Transport Studies Unit (UOXF.JQ)
Centrum dopravniho výzkumu, v.v.i. (CDV) -Transport Research Centre