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Intersection control system and method capable of reducing intersection queuing length

A queuing length and control system technology, applied in the field of intersection control system that can reduce the queuing length at intersections, can solve problems such as congestion and lengthen the queuing length of vehicles, and achieve the effect of slowing down the queuing length

Active Publication Date: 2014-08-13
BEIJING E HUALU INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that the method of dividing the peak period, flat peak period and low peak period of signal light control according to fixed time in the prior art may prolong the vehicle queuing length and even cause the problem of congestion, thereby providing a road junction that can reduce traffic congestion. Intersection control system and method for queuing length

Method used

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  • Intersection control system and method capable of reducing intersection queuing length
  • Intersection control system and method capable of reducing intersection queuing length
  • Intersection control system and method capable of reducing intersection queuing length

Examples

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Embodiment 1

[0035] The present embodiment provides a kind of crossing control system that can reduce the length of crossing queuing, such as figure 1 shown, including:

[0036] The video tracking unit is used to continuously track each vehicle waiting in line to pass through the intersection when the red light is on, to obtain the total number N of queued vehicles; and to obtain the number M of vehicles passing through the intersection within the green light time of the intersection.

[0037] The analysis unit is used to obtain the number of green light cycles required for all vehicles in line to pass through the intersection: L=N / M.

[0038] The signal light control unit, if L=1, calls the induction control strategy for low-peak hours to control the signal lights at the intersection; if 12, calls A coordinated control strategy during peak hours controls the traffic lights at this intersection.

[0039] In this embodiment, using a video tracking unit to continuously track vehicles enter...

Embodiment 2

[0061] The present embodiment provides a kind of intersection control method that can reduce the intersection queue length, as figure 2 shown, including the following steps:

[0062] S1: Use the video tracking method to continuously track each vehicle waiting in line to pass the intersection when the red light is on, and obtain the total number N of vehicles in line.

[0063] S2: Obtain the number M of vehicles passing through the intersection within the green light time of the intersection.

[0064] S3: Obtain the number of green light cycles required for all vehicles in line to pass through the intersection: L=N / M.

[0065] S4: If L=1, call the induction control strategy in the off-peak period to control the intersection signal light;

[0066] If 1

[0067] If L>2, call the coordinated control strategy during peak hours to control the intersection signa...

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Abstract

The invention provides an intersection control system and method capable of reducing the intersection queuing length. How many green light periods are needed by current queuing vehicles to pass through an intersection can be accurately obtained by conducting continuous tracking on the queuing vehicles through a video tracking unit. According to the number of the green light periods needed by the current queuing vehicles to pass through the intersection, whether the current period of time passing condition belongs to the peak period or the flat peak period or the low peak period is judged in a quantified mode, and then a signal light control strategy is adjusted. Due to the fact that the process is carried out in real time, the signal light control strategy is adjusted in real time according to the green light time needed by the queuing vehicles to pass through the intersection. Compared with the high peak, flat peak and low peak control strategy of signal light control through fixed time division in the prior art, the length of the queuing vehicles at the intersection can be more effectively reduced.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to an intersection control system and method capable of reducing the queue length at the intersection. Background technique [0002] With the rapid increase in the number of motor vehicles in cities, it has become a norm to wait in line at intersections for green lights during peak hours for motor vehicles. To improve the control efficiency of signal lights at intersections, the key is to determine whether the current traffic state is peak hours, flat peak hours, or low peak hours, so that different control strategies can be adopted to alleviate traffic congestion at signal light control intersections caused by vehicles queuing up and waiting for green lights . [0003] In the 1970s, foreign developed countries developed representative adaptive control systems such as SCOOT and SCATS, which have achieved certain results in reducing the number of stops and improvi...

Claims

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Application Information

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IPC IPC(8): G08G1/08
Inventor 姜廷顺李占宏张吉辉翟战强李颖宏冉学均
Owner BEIJING E HUALU INFORMATION TECH
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