Microscopic Modeling And Simulation Researching During Mixed Traffic Flow

Mixed traffic is the main character of the urban traffic flow in China, and the mutualinterference among automobile,motorcycle,electric scooters,electric bicycles and bikesmakes the urban road congestion increasingly become more and more serious, which hasseriously impact on the traffic. The road segment is an important part of the urban trafficand the bridge is the typical sections in which motor vehicles and non-motor vehicles arerunning. The microscopic model is established based on the cellular automatamodeling.The research which is meaningful for the grasp of the urban traffic flowcharacter and the capacity of traffic runnning is carried out in simulation environment inthis paper.Aiming at the increasing dominant position of electric scooters on the non-motorvehicle lanes at small and medium-sized cities in south China,the mixed non-motorvehicles cellular automata model of electric scooters and motorcycles are bulit based onthe southern city which has many bridges and at the same time the non mixed model isestablished.The research results are as follows?1) The CA model of electric scooters is set up based on the urban road segment incombination with the the driving character and the CA model of automobile. The law ofcapacity and speed variation of the electric scooters under random moderated probabilityand different roadway are analyzed in simulation environment.2) The mixed non-motor driving CA model of electric scooters and motorcycles isestablished combining with the reality of city traffic in the southern small andmedium-sized cities in our country. The law of traffic capacity and speed variation of thenon-motor under different mix proportion,different random moderated probability anddifferent roadway are analyzed in simulation environment. The results show that themodel is effective and reliable under the measured data.3) The CA model based on the brige hybrid non-motor model is estabilshedcombining with hybrid non-motor CA model, the motor one directional of two lanesmodel as well as the special sections of the city bridges. The the validity and reliability ofthe model are verified in simulation by the real data and the traffic law of motor andnon-motor and traffic capacity of briage are explored under the condition of frictionbetween mutual interference between motor vehicles and non-motor vehicles.