1. Assistant Professor in Transportation Science, Univ. of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia.
2. Professor in Transportation Science, Univ. of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia.
3. Graduate Research and Teaching Assistant in Transportation Science, Univ. of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia (corresponding author).