| Nowadays people's living standards are getting better and better.Today,human society has entered a highly civilized society.Various countries have put forward the concept of smart city one after another,of which smart traffic is the most important.However,with the increasing number of private cars,they are directly caused Massive congestion in urban roads,especially in first-tier cities such as Beijing,Shanghai,Guangzhou and Shenzhen,caused a great deal of economic loss.And the frequency of accidents in a city where traffic congestion is also relatively high,seriously affecting people's lives and property.Obviously,the problem of serious traffic congestion in urban areas is contrary to the concept of smart cities.It can be said that if the problem of serious congestion in urban areas does not improve,the concept of smart cities can hardly be realized.The reason,in addition to the large number of private cars outside the following two main reasons:(1)Some road construction plans and road planning are not reasonable;(2)The lack of macro-control of traffic and traffic guidance.In particular,the impact caused by Cause 1 is even greater.For example,if a city's original road construction plan was unreasonable and if the road was completed,at this time,it will either re-design and rebuild the road and start the work again.However,this will inevitably result in a great deal of manpower,resources and financial resources Waste;or continue to use this road,but later the road construction program will be the way to contain,layers of interaction,a vicious cycle may eventually lead to the city's entire traffic road planning problems,and this issue has a direct impact A city's development.For example,in 2016,Gao De Maps jointly issued by the Ministry of Transportation Research Institute,Daimler Sustainable Transport Research Center of Tsinghua University,Aliyun,Tsinghua Tongheng Planning and Design Institute,the first financial data new media and other authorities officially released The Report on Traffic Analysis of Major Cities in China 2016 shows that Jinan,Harbin and Beijing rank the top three in the whole country,among which Harbin has the most unreasonable urban road planning.This shows that the impact of road construction planning on the causes of traffic congestion Big.In view of the above causes of traffic congestion,this paper uses Machination to describe the complicated mechanisms in real traffic system and to use Unity3 D engine to realize the simulation of traffic system.When a construction plan is proposed,vividly simulate the vehicles on the road The feasibility of the scheme was tested to get the most reasonable scheme of road construction and even the complete traffic network could be built by using this system.In view of the cause two,this paper made use of wavelet neural network improved by genetic algorithm On the other hand,accurate traffic flow prediction is also one of the key technologies of traffic control and traffic guidance.According to the accurate and accurate traffic flow prediction,on the one hand,accurate traffic flow prediction can make the traffic simulation system more realistic.On the other hand,Traffic flow prediction,the traffic department can use some control measures to improve the utilization of the existing road network,slow down congestion;In addition the existing domestic urban travel information service platform and network maps provide mainly static information services,and traffic flow Prediction can be dynamically based on existing ones Historical traffic data given traffic data for the future time period,can provide better and more intuitive reference for people's travel. |
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