Road network expandable region control method based on MFD

Abstract

The invention provides a road network expandable region control method based on MFD. The method comprises the steps of dividing a traffic subarea into a core region and an adjacent region, obtaining the MFD properties of different regions, and obtaining a road network expandable region when the traffic conditions of the whole road network tend to be consistent through the MFD attributes of the traffic road networks of the core region and the adjacent region; the road network accommodating capacity of the adjacent area being increased; if the core area adopts traffic control, judging the numberof overflowing vehicles in the core area. The number of vehicles in the core area can inrush into the adjacent area, so traffic control measures, namely green light compression time adopted by the core area, can be obtained when the number of vehicles capable of being increased and accommodated in the adjacent area approaches the number of overflowing vehicles in the core area; traffic control under green light compression is carried out on the core area, so traffic states of the core area and the adjacent area tend to be consistent; therefore, the traffic performance of the whole road network is improved through the expandable 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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