A city-level signal recommendation system based on spatio-temporal similarity

Abstract

A city-level signal recommendation system based on spatio-temporal similarity, including a real-time traffic analysis module, which is used to detect the traffic operation status of each intersection in the urban road network in real time, and judge whether it exceeds the carrying range of the intersection, so as to determine the intersection that needs to be intervened in time and Trigger signal control recommendation module; signal control recommendation module, used to recommend real-time signal control schemes based on time-space similarity and send them to the signal control system module; database module, used to save system data; signal control system module, used to execute the delivery The real-time signal control scheme; the evaluation module is used to evaluate the effectiveness of the signal control scheme.

Description

technical field [0001] The invention belongs to the field of intelligent transportation, and relates to a city-level signal recommendation system based on time-space similarity. Background technique [0002] Urban traffic signal control is one of the most effective ways to solve urban traffic problems. Signal control strategies can be divided into timing strategies and adaptive strategies. Timing strategy includes single-point adaptive strategy and adaptive coordination strategy. The single-point adaptive coordination strategy is suitable for a single intersection, while the adaptive coordination strategy considers an urban area or even the entire urban road network. Timing policies are based on historical rather than real-time demand. Therefore, the timing strategy obviously cannot adapt to the changing traffic conditions. For example, accidents or other unpredictable events can disrupt traffic conditions. In the past few decades, some adaptive signal control systems h...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for manual regulation to complete signal control at the city level during peak hours

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