Research On Traffic Flow Control And Signal Optimization Method Based On Energy Consumption

With the rapid development of social economy and the accelerating of urbanizationprocess, traffic congestion, waste of traffic energy consumption and other relatedproblems have become increasingly prominent. When traffic congestion occurs insections or intersections of the urban traffic system, if effective measures were not takenpromptly, it could lead to regional traffic congestion, energy consumption increase andthe evolution of high-energy region which would be the disadvantageous factors indeveloping the sustainable and harmonious society.The relationship between traffic state and traffic energy systems is analyzed, thetraffic flow characteristics of high-energy region are studied and the traffic stateidentification model is established. The boundaries threshold value and the impact ofdifferent level energy region can be determined to identify the economic energy zone,the middle-energy region and the high-energy region as well. On this basis, the trafficcontrol optimization methods considering energy consumption are studied hierarchically.The following studies are considered:Firstly, the multi-state characteristics and self-organization of urban traffic flow areanalyzed, and the impact of traffic flow on energy consumption under differentoperating states is studied. The traffic running sluggish, the higher energy consumptionof traffic flow, and the areas where the queue lengths and delays are beyond thetravelers endurance time are defined as the high-energy region. The boundary thresholdvalues under different levels of energy consumption area are selected through thecomparison of traffic parameter analysis.Secondly, the traffic energy consumption of different conditions in urban roads isanalyzed from micro-view. The signal control model of single intersection and thesynergistic control model of intersections are established based on the optimalcombination of delays and energy consumption. Take the synergistic control of twoadjacent intersections for example, the energy-saving effects of the synergistic controlmodel can be validated with Vissim simulation.Thirdly, the traffic control strategies of different energy regions are analyzed frommacro-view. According to the characteristics of the high-energy region, the synergisticevacuation model of traffic control and dynamic guidance is constructed with theoptimal combination objectives of the network balance, delay and energy consumption,and the corresponding solving algorithm is designed. Combined with the established model and real condition, the optimization effect of the established model isquantitatively analyzed through an example.Finally, combined with the established model and the actual situation, the quantitativeanalysis method is applied to study the traffic management strategies. Also, theoptimized effect of different levels of energy consumption areas is attained by taking theabstract parameters into the existing model.