Urban discrete traffic network design method based on target assignment

Abstract

The invention provides an urban discrete traffic network design method based on target assignment. In the planning of urban transportation network, it is often necessary to consider the requirements of setting certain target traffic in order to control traffic congestion, traffic pollution, service level, etc., the so-called target distribution problem. In order to make rational use of road resources and make the service level of each road section close to the design goal, the present invention establishes a method for urban discrete traffic network design based on target distribution. The method comprises following steps: (1) constructing a two-layer planning model; the upper target is to minimize the mean square error of the actual service level and design goal of each road segment; theconstraint condition is the capital budget, the decision variable is the construction plan of the candidate road segment, and the lower layer is the user equilibrium; (2) using the iterative optimization algorithm to solve the model; (3) describing the specific implementation method and the effectiveness of the method combining the Nguyen-Dupuis network commonly used in traffic network analysis.

Description

Technical field: [0001] The invention relates to an urban discrete traffic network design method based on target flow distribution, which belongs to the technical field of traffic engineering. Background technique: [0002] The traffic network design problem is a problem that considers the user's route selection behavior, and under the given constraints, selects the reconstructed or newly built road section, so as to optimize the performance of a certain network. This research problem is the focus and difficulty of the research in the field of transportation planning, which is very challenging and has aroused the research interest of many scholars. The transportation network design problem is a typical leader-follower two-level programming problem. The upper layer problem is a certain performance optimization of the traffic network, and the lower layer problem is usually the user balance problem. Common network performance includes system impedance, environmental pollution,...

AI Technical Summary

Problems solved by technology

[0002] The traffic network design problem is a problem that considers the user's route selection behavior, and under given constraints, selects a reconstructed or newly built road section, so as to optimize the performance of a certain network

However, punitive tolls for vehicles driving on road sections are post-event remedial measures. On the one hand, they require a high level of technology, and on the other hand, they require the understanding and cooperation of road users. It is very difficult to implement in engineering practice, so it is rarely See success stories in this area

Images