Supersaturation road network multilayer control boundary dynamic division method based on MFD under vehicle networking

Abstract

The invention relates to the control method technology field and especially relates to a supersaturation road network multilayer control boundary dynamic division method based on a MFD under vehicle networking. The method comprises the following steps of (a) establishing a road network model; (b) after the step (a), establishing a road network MFD reference database; (c) after the step (b), acquiring a road network traffic parameter under a vehicle networking environment; (d) after the step (c), under the vehicle networking environment, collecting the mobile vehicle number NCRu of a road network center minimum unit CRu in real time, according to the MFD reference database, determining the traffic state of the road network center minimum unit, and if the road network center minimum unit isin a non-congested state, determining that a road network has no congestion area; and if the road network center minimum unit is in a congested state, defining as a congestion area. In the invention,under the vehicle networking environment, according to the MFD reference database, a center key node is extended to peripheral nodes, and the traffic state of each road network minimum unit is determined.

Description

technical field [0001] The present invention relates to the technical field of control methods, and more specifically, relates to a method for dynamically dividing multi-layer control boundaries of an oversaturated road network based on MFD under the Internet of Vehicles. Background technique [0002] With the rapid development of social economy, urban traffic congestion is becoming more and more serious, which brings great challenges to urban traffic. In order to control urban sick traffic congestion, many scholars have proposed various control strategies, which can effectively relieve traffic congestion to a certain extent. The control strategy appears to be inadequate. Recently, the relevant theories of Macroscopic Fundamental Diagrams (MFD) were revealed by two scholars, Daganzo and Geroliminis. They believed that each road network has its own macroscopic fundamental diagram, which reflects the relationship between the number of moving vehicles in the road network and t...

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Problems solved by technology

All of the above methods can effectively control the road network at a macro level, and reasonably play the role of traffic control facilities in the oversaturated state. However, the control sub-areas mentioned in the above methods are all pre-defined by experienced engineers, and then implement various Control strategy, there is a factor of inaccurate definition of sub-areas

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