Bidirectional dynamic coordination control method for oversaturated trunk road

Abstract

The invention discloses a bidirectional dynamic coordination control method for an oversaturated trunk road. The bidirectional dynamic coordination control method comprises the steps of determining ideal phase difference according to the running properties of queued vehicle stream and arrived vehicle stream, determining the green time for meeting the traffic demands and avoiding the intersection congestion, determining queued vehicle weight impact factors by different control strategies, and taking maximal release amount as a target for realizing coordination control of the trunk road in a first direction; based on the coordination control in the single direction, calculating and coordinating the phase difference, the green time and the release amount at the intersection of the trunk road in another direction for different status combinations in three statuses of green lamp loss, intersection congestion and new traffic stream compensation at the intersection in the other direction of the trunk road; and in combination with coordination control algorithms in two directions, realizing the bidirectional dynamic coordination control of the oversaturated trunk road. The bidirectional dynamic coordination control method for the oversaturated trunk road is suitable for traffic oversaturated trunk roads in big cities, and is capable of effectively reducing the queuing length and the delay time at the intersection on the trunk road, improving the overall passing capability of the trunk road and avoiding the spread of traffic congestion.

Description

technical field [0001] The invention relates to regional traffic coordination control, in particular to a two-way dynamic coordination control method for arterial roads under oversaturated conditions. Background technique [0002] At present, the number of motor vehicles in my country is increasing rapidly, and the growth rate of individual traffic volume is significantly higher than that of public traffic volume, resulting in a significant increase in the total amount of urban road traffic. Due to the limitation of road space capacity and road traffic capacity, the traffic flow characteristics of the arterial roads that bear the main share of the total traffic during peak hours present the characteristics of "high density" and "high flow". The red light signal at the intersection of the arterial road, as an external intervention factor of the traffic flow, leads to the intermittent characteristics of the traffic flow and the delay of the intersection of vehicles. Therefore,...

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Problems solved by technology

Although there are some studies on supersaturated conditions, none of them have proposed

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