A capacity analysis and optimization method of urban traffic system
A technology for urban traffic and system capacity, applied in traffic control systems, road vehicle traffic control systems, traffic flow detection, etc., can solve the problem of lack of interactive description of traffic subsystems, overly idealized calculation methods, inconsistent judgment standards, etc. problems, to achieve the effect of reducing the construction land area and volume ratio, improving scientificity, reducing the occurrence of motorization and attracting
Active Publication Date: 2021-10-26
广州市交通规划研究院有限公司
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Problems solved by technology
[0003] At present, domestic and foreign studies on the capacity of transportation systems are limited to road networks, and have not been extended to transportation subsystems such as rail transit and static transportation, and there is also a lack of interactive description of the transition between transportation subsystems; secondly, the typical cross-section Or the traffic flow of nodes to determine whether the traffic system is saturated, the calculation method is too idealized and complicated, the judgment standard is not uniform, and it is difficult to use in actual work
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[0061] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0062] The flow chart of a kind of urban traffic system capacity analysis and optimization method of the present invention is as attached figure 1 As shown, the specific steps are as follows:
[0063] S1. Input basic data
[0064] Divide the research area into several traffic districts, and the land development scale of individual traffic districts can be adjusted appropriately, which is defined as traffic districts with variable development scale; obtain the urban land use scale, urban social and economic development level, and urban traffic infrastructure supply scale The scale of urban land use includes at least 4 indicators of construction land area, floor area ratio, travel generation intensity, and travel attraction intensity of each traffic district; the urban social and economic development level includes at least the number ...
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The invention provides a method for analyzing and optimizing the capacity of an urban traffic system, comprising the following steps: S1, inputting basic data; S2, calculating the total amount of motorized trips and the mode structure during peak hours; S3, decomposing and calculating the traffic carried by the road traffic network and the rail traffic network Motorized travel volume, calculate the static traffic demand; S4, calculate the saturation state determination index in the basic situation; S5, determine whether the average travel time and 95% travel time meet the standard; S6, determine the average travel time of public transportation and individual transportation Whether the time ratio reaches the standard; S7, output the result data. The invention can be applied to the construction of urban intelligent traffic system, and provides quantitative and scientific auxiliary decision-making technology for orderly and rational development of urban construction land and traffic control.
Description
technical field [0001] The invention relates to the field of urban intelligent transportation, which is the specific application of new generation information technology in urban transportation planning, construction and management, and particularly relates to a method for analyzing and optimizing the capacity of an urban transportation system. Background technique [0002] In the 1950s, American traffic engineering scholars first proposed the concept of road network capacity. After decades of research, scholars have different understandings of the physical meaning and research methods of road network capacity, and they have been continuously adjusted and deepened as time goes by. . American scholars believe that the capacity of the road network is to satisfy the system optimization under the constraints of the traffic capacity of the road section, and the road network can bear the maximum traffic flow, and establish different research models through graph theory, traffic al...
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IPC IPC(8): G08G1/01G06Q10/04G06Q10/06G06Q50/26
CPCG06Q10/04G06Q10/063G06Q50/26G08G1/0125G08G1/0137
Inventor 周志华刘明敏江雪峰甘勇华刘佳辉顾宇忻
Owner 广州市交通规划研究院有限公司