1. Faculty of Transport and Traffic Engineering, University of East Sarajevo, Doboj 74000, Bosnia and Herzegovina
2. Civil Engineering, School of Engineering, Sustainable Transportation Research Group, University of Kwazulu Natal, Durban 4041, South Africa
3. Faculty of Technical Sciences, University of Novi Sad, Trg Dositeja Obradovića 6, Novi Sad 21000, Serbia