A method for dynamic optimization of intersection signals based on Internet data

Abstract

The invention discloses a dynamic intersection signal optimization method oriented to Internet data. The method mainly comprises three stages including basic timing principle design, Internet data processing and timing scheme generation. The basic timing principle design mainly comprises giving basic parameters such as a phase division principle and shortest pedestrian time. The Internet data processing mainly comprises calculating a traffic operation index and an operating state level for signal optimization on the premise that only Internet-provided average travel speeds of all directions ofan intersection exit. The timing scheme generation comprises based on the set basic principle and the estimated traffic operation state, performing cycle calculation and phase time design and finallyobtaining the complete signal timing scheme of the intersection and continuously performing dynamic optimization according to new data. The invention provides an application method oriented to Internet data on the premise of lack of traditional detection information at the intersection, which improves the efficiency of a real-time timing scheme of the intersection signal lights, and effectively deals with fluctuations and unexpected situations of traffic demands.

Description

technical field [0001] The invention relates to the technical field of urban intelligent traffic systems, in particular to a method for dynamically optimizing intersection signals facing Internet data. Background technique [0002] In the face of the rapid growth of urban motor vehicle ownership and residents' travel demand, the supply capacity of urban traffic is far less than the growth of traffic demand. Coupled with frequent accidents, traffic congestion in small and medium-sized cities has gradually begun to intensify, and some core areas are also prone to regional Congestion or local traffic paralysis, especially in the morning and evening peak hours, the afternoon before holidays, large-scale events, etc. When urban road network construction, traffic engineering design, and infrastructure construction tend to be stable, the preferred countermeasures to further improve traffic operation efficiency focus on signal control optimization. At present, due to the influence ...

AI Technical Summary

Problems solved by technology

Traditional signal timing optimization methods mostly rely on traffic flow information at intersections, and cannot directly apply traffic operating status provided by the Internet.

Images