Method and system for cooperation of city traffic guidance and signal control

Abstract

The invention discloses a method and a system for cooperation of city traffic guidance and signal control. The method comprises the following steps of collecting real-time traffic flow information and real-time signal control information; establishing a PARAMICS simulation model of traffic guidance and signal control cooperation based on a city traffic network; setting parameters of the simulation model according to the abovementioned signal control information; calibrating a traffic generation and attraction matrix based on the collected real-time traffic flow information; receiving guidance strategy parameters of the PARAMICS simulation model, operating simulation, and outputting operational condition indexes of systems; changing the guidance strategy parameters, running simulation repeatedly, storing operational condition indexes of the systems of each simulation, and selecting the optimal guidance strategy parameter; applying the optimal guidance strategy parameter to traffic guidance and signal control systems; and sending the optimal guidance strategy to a user. The invention overcomes a defect that an algorithm of cooperation of traffic guidance and signal control systems is complicated and cannot be implemented in the prior art.

Description

technical field

[0001] The invention belongs to the field of intelligent traffic coordination systems, in particular to a method and system for urban traffic guidance and signal control coordination. Background technique

[0002] In the existing traffic management control system, the urban traffic guidance system and the signal control system are usually two completely independent systems. However, if we analyze from the perspective of the optimization objectives of the two systems, we can find that the urban traffic guidance system is optimal for users, while the signal control system is optimal for system efficiency. This makes the urban traffic operating conditions fluctuate all the time, and under extreme conditions, it may lead to a decrease in traffic operating efficiency.

[0003] After nearly forty years of research, researchers at home and abroad have a certain understanding of the coordination of urban traffic guidance systems and signal control systems. However,...

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