Lane dynamic partitioning control method for expressway intersection area

Abstract

Provided is a lane dynamic partitioning control method for an expressway intersection area. For the expressway intersection area, based on the actual traffic state, lanes of the intersection area are dynamically partitioned into intersection area lanes and non-intersection area lanes through signal indication signs. The intersection of the upper ramp traffic, the lower ramp traffic and the mainline traffic is achieved by means of the intersection lanes; the exclusive right of way is provided for the non-intersection traffic flow of an expressway mainline by the utilization of the non-intersection lanes. The control method comprises the two parts of the dynamic partitioning of the functions of the intersection area lanes and the control over the functions of the intersection area lanes, and the lane function dynamic partitioning model regards the overall through-out capacity maximization as a target, and determines the number of vehicles on the intersection lanes and the non-intersection lanes; the lane function control part comprises a control strategy implementation scheme, information publishing equipment arrangement and an isolation implementation method. The method can provide the exclusive right of way for the expressway mainline traffic in the intersection area, and reduce the interference to straight vehicles of the mainline by the intersection behavior, thereby improving the through-out capacity of the intersection area; under the condition that the vehicles line up and overflow at an off-ramp, the straight vehicles of the mainline can pass through normally, the vehicle average delay is reduced, and the bottleneck problem of the expressway weaving area is solved or relieved.

Description

technical field [0001] The invention belongs to the fields of traffic engineering, traffic information and control systems, and relates to the technical field of lane layout and lane function dynamic control in the weaving area of ​​expressways, and more specifically, relates to a weaving area that improves the operating efficiency of the weaving area by dynamically changing the lane function Lane control method. Background technique [0002] The expressway weaving area is the bottleneck node of the urban expressway system. How to optimize the space-time resources in the weaving area is the key to improving the operation efficiency of the weaving area. However, the current management and control methods of the weaving area of ​​expressways are mostly focused on the information prompt of the upstream section, vehicle speed guidance and ramp control, and there is no "dynamic lane division control in the weaving area". Utilization of efficiency research, and no patents for inv...

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages: (1) For unsaturated conditions, it may cause an increase in the average vehicle delay; (2) The overflow phenomenon caused by the long queue at the entrance ramp will affect the normal traffic on the surface road; (3) ) cannot solve the problem that the traffic on the main line of the expressway is paralyzed due to the congestion of the entire line in the weaving area caused by the overflow of the exit ramp queue

However, this method has the following disadvantages: (1) For unsaturated conditions, it may cause an increase in vehicle delay, so it is generally only applicable to oversaturated conditions; (2) It does not consider the flow ratio and fails to make full use of the weaving area and downstream Lane traffic capacity; (3) The overflow phenomenon caused by the super long queue at the entrance ramp will affect the normal traffic on the ground road; (4) The main line of the expressway needs to stop and queue, which increases the travel time of non-interweaving vehicles, so the method’s The applicability needs to be evaluated in combination with the overall benefits of the expressway network

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