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Analysis and Research on Floor Limitation of Beijing Second Ring Road Overpass

  • Zhao, Guangcheng
With the development of urbanization and the acceleration of industrialization in China, traffic congestion has appeared in some big cities, such as Beijing. As the problem becomes more and more serious, it brings great inconvenience to people's travel and life, and it has a very bad impact on the environment. Therefore, some experts put forward the suggestion of setting traffic lights on the two sections of the overpass deck to control motor vehicles entering and leaving the overpass. In this paper, the feasibility of the experts’ suggestions is mainly studied by means of mathematical modeling, which is as follows: Firstly, we collect traffic data of Beijing Second Ring Road, visualize the data, and intuitively get the average motor vehicle flow and road congestion time of Beijing Second Ring Road in each working day. Secondly, we use the cellular automaton model under open boundary conditions to analyze the time when a train passes through three signal lights in an idealized situation, and compare it with the previous situation, so that we can get the relative result after having the signal lights. Previously, the time spent crossing intersections without traffic lights has been greatly reduced, and the conclusion that the traffic flow has increased or decreased has been reached. Thirdly, on the basis of Problem 2, we increase the number of signal lights, change a congested overpass into a study of two congested overpasses, simplify the problem and superimpose the two systems accordingly. Thus, we can conclude that if we take into account the two traffic lights at the same time, it will not improve the driving efficiency, ease the traffic flow, and even bring pressure to the traffic, so we need to carry out the research. The conclusion that traffic lights are adjusted at wrong time to improve driving efficiency. Finally, on the basis of Question 2, we increase the research objects, not only to study the East-West Main Road, but also to study the North-South Main Road. We analyze what impact the East-West Main Road will bring to the South-North Main Road when the above-mentioned reform methods are adopted. We introduce the concept of average delay to carry out quantitative analysis, and draw a conclusion through Webster's delay formula.
Select Volume / Issue:
Year:
2019
Type of Publication:
Article
Keywords:
Open Boundary Conditions; Cellular Automata Model; Webster Equation; Traffic Signal Lamp; Vehicle Flow
Journal:
IJASM
Volume:
6
Number:
5
Pages:
180-188
Month:
September
ISSN:
2394-2894
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