Abstract
Based on the Nagel-Schrekenbercellular automaton model of traffic flow, the article analyzed the influence that driving on the right side takes to the traffic flow (practical capacity) in the condition of light and heavy traffic. With the combination of fluid dynamics and vehicle dynamics, we established the Cellular Automata model (referred to as C) for mixed speed two-lane traffic flow on the rule driving on the right side. We also got the relationship among speed, density and traffic though the traffic simulation platform and MatLab numerical simulation. Then we used the method to find out the large bus share rate, the number of vehicles changing lanes and the influence law of safety factors on traffic flow. And we came to a conclusion that the relationship between traffic flow and load are inverted U shape changes in the low load and high load conditions,The conclusion, which provides a theoretical basis for the reasonable organization of expressway traffic management.
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