Four-way ring intersection traffic response control method

Abstract

The invention discloses a four-way ring intersection traffic response control method and belongs to the technical field of intelligent traffic control. The method is characterized by introducing conceptions of front left turn and rear left turn so as to obtain nine basic principles of phase display sequences; establishing a technical architecture suitable for a flexible phase structure; arrangingan inlet requirement detector, a ring road queuing detector and a ring road outlet detector; acquiring head time interval and occupied time by adopting an independent detection mode of lanes; and defining ten key traffic events and three types of logic rules which comprises a phase switching rule, a deadlock management rule and a green time adjusting rule, wherein the phase switching rule is usedfor managing the duration of the phase switching process and determining whether to cut off red time of the next green phase; the deadlock management rule is used for judging a ring road deadlock state and managing a ring road unlocking process; and the green time adjusting rule is used for determining whether to cut off the green time of an inlet phase. The four-way ring intersection traffic response control method can timely adjust passing time resource supply according to short-time continuous change of motor vehicle traffic demand.

Description

technical field [0001] The invention belongs to the technical field of intelligent traffic control, and relates to a traffic response control method at a four-way roundabout, which adopts a "left-turn secondary parking" control mode. Background technique [0002] The "left-turn secondary parking" control mode of the four-way roundabout has the following technical features: In terms of traffic space, a special entrance lane for left-turn motor vehicles is set up, and the parking line at the entrance road is regarded as the first parking line. The second parking line is set at the upstream position of the interlaced area of ​​motor vehicles entering the ring. After most left-turning motor vehicles enter the ring road through the first parking line, they need to enter the queuing state after the second ring road parking line in the counterclockwise direction. The second stop line can only be passed after obtaining the right of way again; in terms of passing time, install the en...

AI Technical Summary

Problems solved by technology

However, such methods cannot automatically adjust the supply of transit time resources according to short-term continuous changes in motor vehicle traffic demand. During the peak period of motor vehicle traffic demand, the ring road is likely to fall into a deadlock state without human intervention.

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