1. Department of Transportation Planning and Engineering, National Technical University of Athens (NTUA), School of Civil Engineering , 5 Iroon Polytechniou St, 157 73 Zografou, Athens, Greece
2. Hellenic Institute of Transport (HIT), Centre for Research and Technology Hellas , Thessaloniki, Greece
3. Department of Transportation Planning and Engineering, School of Civil Engineering, National Technical University of Athens , Athens, Greece