Analysis on urban transportation ideas of 2022 Zhongqing cup C

Urban transportation

2022 Zhongqing Cup C Analysis of urban traffic ideas

Get the information of this China Youth Cup :https://blog.csdn.net/weixin_51993640/article/details/124851505

* Urban transportation *

One aspect that needs to be improved most in modern cities is the urban traffic framework . Transportation infrastructure is a dynamic and open scene formed by different types of information , For making credible and reliable decisions . In many countries , The traditional method of controlling intersections is to use traffic lights to control the passage of vehicles , This control is obviously effective , But the number of cars and other related factors that affect road use remain a technical challenge for researchers .

In the past research work, many scholars have proposed a method , This method evaluates the green light time based on the number of vehicles , To modify the duration of the green light in the next stage . However , According to observation , Sometimes the green light duration will change , And this change is not significant for improving road service level . As the first conclusion , Such a proposal may increase the computational costs associated with the system program . however , Due to current road restrictions , It is very necessary to improve the adjustment mode of traffic lights .

in addition , Urban traffic is characterized by fragmented traffic flow and short road sections , It is significantly different from continuous highway traffic . Advanced information and communication technology of urban roads can be used to promote traffic accident management . If an accident is detected and the road connection is blocked . In order to reduce traffic congestion caused by accidents , If the accident information can be transmitted to the selected driver , And help them bypass or develop more intelligent traffic lights in urban areas . So as to further improve the technical level of preventing urban road traffic congestion caused by accidents .

**** Question 1 ：**** Please follow the attachment 1 Traffic intersection , Give the traffic light time setting of each intersection under different traffic flow ;

* problem ** Two *****：**** Please follow the attachment 2 Traffic intersection , Analyze the road conditions under which the design of the roundabout is better than setting the traffic light intersection ;

* problem ** 3、 ... and *****：**** Evaluate the green light time based on the number of vehicles , This dynamic traffic light design result is not ideal , Please attach 1 Choose a class of traffic intersection , Combined with the actual situation , Try to build a mathematical model , Give a reasonable plan , And then improve the road service level ;

* problem ** Four *****：**** If there is traffic jam on urban roads , How to better help drivers choose routes ？ How to develop more intelligent traffic lights so that congestion can be alleviated as soon as possible ？

Annex 1

“ Cross ” Crossroads

“ Two way street ” A fork in the road

“ Two way street ” Wucha road

Annex II

“ Two way street ” Roundabout Sancha road

“ Two way street ” Roundabout Wucha road