Two-lane mixed traffic flow model considering lane changing

Abstract

Based on the analysis of the advantages and disadvantages of the existing car-following model and combined with the actual road conditions, an improvement scheme is proposed for the selected model. The improvement plan adds the consideration of the speed difference between the front and rear vehicles, and introduces the safe distance parameter of the most dangerous situation when the vehicle is braking. The comparison with the actual measurement results after simulation and conversion shows that the improved car following model is effective and the vehicle lane change rules are improved. The improvement of lane changing rules allows different lane changing rules to be obtained in different situations. The lane-changing rules are coupled with the improved car-following model to obtain a two-lane model based on different rules. The corresponding programming simulation is compared with the measured road results to verify the practicability of the model. The simulation result shows that the new model can still reproduce the road traffic flow under different lane changing rules. After the introduction of mixed traffic, the model can reproduce the maximum flow of the road within the error tolerance.