过饱和流量下交叉口服务水平提升方法研究与实践

北京理工大学珠海学院2016届本科生毕业论文AbstractWith the development of the country,the improvement of people's living standard andincrease in disposable income per capita,cars have entered every family,it is common for afamily to have several cars.So there are more and more motor vehicles in big cities in ourcountry,but the growth of road resources and parking resources lags behind seriously,inevitably leads to the driving difficult,the vehicle difficult,the parking difficultcontradiction is increasingly prominent.A large part of the traffic problem occurs atsignal-controlled intersections,the intersection with supersaturated flow is often moreproblematic,so the optimization of supersaturated flow intersection is an important part ofroad optimization.This paper intends to improve the current traffic situation by improving the service levelat the intersection under the condition of supersaturated flow.The intersection selected in thispaper is proved to be an intersection with supersaturated flow,then the service level of theintersection is optimized and improved by the signal timing optimization design and thecoordinated control of the trunk line,finally,the optimization scheme is obtained by usingvissim simulation.Finally,some unverified service level improvement schemes andsuggestions are put forward for readers'reference,if you're interested,you can do your ownresearch and see if it works.Key words Intersection;the service level;signal control;arterial coordination;vissimsimulation.