1 Laboratory for Transport Engineering, Department of Civil and Environmental Engineering, University of Cyprus, 75 Kallipoleos Str., P.O. Box 20537, 1678 Nicosia, Cyprus. Electronic address: lucdimit@ucy.ac.cy.
2 Chair of Transportation Systems Engineering, Department of Civil, Geo and Environmental Engineering, Technical University of Munich Arcisstrasse 21, 80333 Munich, Germany. Electronic address: c.antoniou@tum.de.