Urban traffic system capacity analysis and optimization method

Abstract

The invention provides an urban traffic system capacity analysis and optimization method. The method comprises the following steps: S1, inputting basic data; S2, calculating a maneuvering travel totalamount and a mode structure in a peak period; S3, decomposing and calculating the maneuvering travel volume borne by the road traffic network and the rail traffic network, and calculating the statictraffic demand; S4, calculating a saturation state judgment index under a basic condition; S5, judging whether the average travel time and 95% travel time reach the standard or not; S6, judging whether the average travel time ratio of the public traffic to the individual traffic reaches the standard or not; S7, and outputting result data. The method can be applied to urban intelligent traffic system construction, and a quantitative and scientific auxiliary decision-making technology is provided for orderly and reasonable 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...

AI Technical Summary

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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