Comparison of simulation results obtained by calibrated and non-calibrated microsimulation traffic model

Microsimulation models are able to model the stochastic nature of traffic flow at the multi- modal level, through a detailed movement modeling of each entity and their interactions. The micro-simulation models are unquestionably a very useful tool, but it is questionable whether they can be expected to give realistic modeling results that can be applied in the methodology, analysis and design in local conditions. The aim of this study is to demonstrate that the selected VISSIM microsimulation model can provide realistic modeling results when the calibration of the model is done. In this paper, a comparison of simulation results obtained by calibrated and non-calibrated microsimulation traffic model with field data measured in real traffic conditions was made. As an experimental base was taken single-lane roundabout in the urban transport network of Osijek, and selected traffic indicators are travel time and the queue parameters.