An mfd-based method for road network expandable area control

Abstract

The invention provides an MFD-based road network expandable area control method. The method divides the traffic sub-areas into core areas and adjacent areas, obtains the MFD properties of different areas, and utilizes the traffic road network itself of the core area and adjacent areas. MFD attribute, when the overall road network traffic situation tends to be consistent, the road network capacity of the adjacent area can be increased; if the core area adopts traffic control, judge the number of overflow vehicles in the core area; the number of vehicles in the core area will flood into the adjacent area area, the traffic control measures can be obtained when the number of vehicles that can be increased in the adjacent area approaches the number of overflow vehicles in the core area, that is, the green light compression time adopted in the core area; the traffic control under the green light compression is implemented in the core area, so that The traffic status of the core area and the adjacent area tends to be consistent; a new expansion area is formed, so that the traffic performance of the overall road network can be improved through this scalable area control strategy of the traffic road network.

Description

technical field [0001] The invention relates to the field of urban road traffic signal control, in particular to a road network expandable area control method based on a macro basic map. Background technique [0002] With the rapid development of urban traffic, traffic congestion is becoming more and more serious, which has become an urgent problem to be solved in traffic research. From the point of view of the primary and secondary contradictions, the core area of ​​urban traffic where the congestion area is larger, the congestion intensity is stronger, and the congestion has a wider impact is the key point of the entire traffic congestion phenomenon. From the perspective of the causes of traffic congestion, traffic congestion is related to traffic demand. When the traffic capacity of the road network reaches the upper limit, congestion will occur. With more and more vehicles pouring into the road network, the congestion in the road network will become more and more serious...

AI Technical Summary

Problems solved by technology

These measures usually involve some traffic participants. Once implemented, they will affect all aspects of traffic. It is difficult to make a macroscopic description of the overall traffic state.

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