| The problem of traffic jam is worsening,which has seriously affected the passenger travel.How to solve the problem of urban traffic congestion has become an important part of the transportation.As an integral part of urban traffic network,urban micro-circulation transportation can diverge the city traffic flow on primary roads and relieve urban traffic congestion consequently,this thesis researches related technology of urban micro-circulation transportation optimization,aiming at alleviating urban traffic congestion.In this thesis,theories about urban micro-circulation transportation and traffic equilibrium are analyzed,the influence of traffic driving behavior on the traffic capacity is verified;in order to estimate the link needed transformed or not,the wavelet is introduced,by wavelet transform for traffic volume,problems of traffic condition stands out.Traffic assignment is established based on the analysis of urban traffic microcirculation road net optimization target,and its solving method based on TransCAD is analyzed,according to the traffic volume got from the model solving above and the analysis of traffic microcirculation capacity and its influencing factors,the suggestions about traffic conditions optimize are given;relying on the simulation of different operating conditions by Vissim and the corresponding traffic data outputted,the effect of the wavelet analysis in the traffic is verify.Based on the Sioux Falls test network,the effect of the microcirculation network optimization on the regional road network is verified.It is conclude that,the road section capacity can be affected by of the traffic operation state;the traffic operation status can obtained from the wavelet analysis of the traffic volume;the optimizing of urban traffic micro-circulation can effectively reduce the urban road network traffic delay,increase traffic running speed,which can improve traffic efficiency and play a role in mitigating traffic congestion. |
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