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Automatic control method for green wave of pedestrian crossing street signal lamp

A pedestrian crossing and signal light technology, applied in the direction of traffic signal control, can solve the problems of not fully considering the negative impact of motor vehicles, unfavorable traffic signal area control, endangering pedestrians and motor vehicle safety, etc., to achieve "green wave" control, The effect of avoiding an increase in delay time and ensuring stability

Inactive Publication Date: 2008-09-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a conflict between pedestrian crossing and motor vehicle traffic, which not only endangers the safety of pedestrians and motor vehicles, but also seriously affects the speed of motor vehicles on the road section, prolongs the travel time of motor vehicles, and is not conducive to the regional control of traffic signals
[0005] The long-term research of the inventors has found that the main reason for the normal passage of motor vehicles on the crosswalk (including pedestrian signal lights) is that the pedestrian crosswalk signal lights in the middle of the road section mostly use pedestrian button-type signal lights, which do not fully take into account other pedestrian crossing lights while meeting the needs of pedestrians crossing the street. Negative impact on motor vehicle operation on the road section

Method used

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  • Automatic control method for green wave of pedestrian crossing street signal lamp
  • Automatic control method for green wave of pedestrian crossing street signal lamp
  • Automatic control method for green wave of pedestrian crossing street signal lamp

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0076] Example 1: Green wave control is implemented for pedestrian crossing signal lights on one-way roads. After investigation, the average speed of motor vehicle roads is 36km / h. The signal period at intersection A (key intersection) at the starting point of the road section is 120 seconds, and the green time length is 60 seconds, as shown in Figure 2. Considering the randomness of the speed of motor vehicles, the motor vehicle signals at each pedestrian crossing adopt early green and late red to extend the green time to 80 seconds, so as to eliminate the impact of pedestrian crossing signal lights on motor vehicle traffic, and the green time of pedestrian traffic is 40 seconds (General pedestrian signal transit time is only 20 seconds). Among them, the control parameters of each pedestrian crossing signal light in the road section are shown in Table 1:

[0077] Table 1 A→B direction

[0078]

[0079] *The tail car is the last car of each cycle when the traffic flow is ...

example 2

[0081] Example 2: Green wave control is implemented for pedestrian crossing signal lights on two-way roads (without central safety island for pedestrian crossing). After investigation, the average speed of motor vehicle roads is 36km / h. The intersection spacing between road sections A and B is the same as in Example 1. The signal period at intersection A at the starting point of the road section is 120 seconds, and the green time length is 60 seconds. The signal period at intersection B is 100 seconds, and the green time length is 50 seconds. The intersection A is selected as the key intersection of the green wave design, and its cycle is used as the cycle of the green wave system. Each crosswalk signal light takes the same cycle of 120 seconds as the key intersection. Considering the randomness of the speed of motor vehicles, the length of green time for pedestrians to pass is 40 seconds according to the signal period, the distance between adjacent crosswalks and the average ...

example 3

[0086] Example 3: Green wave control is implemented for pedestrian crossing signal lights on two-way roads (with a central safety island for pedestrian crossing). After investigation, the average speed of motor vehicle roads is 36km / h. The signal period at the intersections at both ends of the road section is 120 seconds, and the green time length is 60 seconds. Considering the randomness of the speed of motor vehicles, the motor vehicle signals at pedestrian crossings adopt early green and late red to extend the green time length to 80 seconds. Eliminate the impact of pedestrian crossing signal lights on motor vehicle traffic, and the green time of pedestrian traffic is 40 seconds (the general pedestrian signal traffic time is only 20 seconds).

[0087] Table 3 A→B direction (uplink)

[0088]

[0089] *The tail car is the last car of each cycle when the traffic flow is saturated.

[0090]Table 4 B→A direction (downlink)

[0091]

[0092] *The tail car is the last car ...

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Abstract

This invention relates to an automatic control method for green waves of roadway signal lamps automatically controlled by computers, which can increase the usage efficiency of motor roadways and crosswalk: 1, increasing safety for foot passengers and reducing conflict between motor cars and passengers, 2, reducing interference of foot passengers to cars to ensure stability of motor flows, 3, much more benefit to the region control to city road traffic to realize green wave control to motor cars among city road crossings.

Description

technical field [0001] The invention relates to a green-wave control method for pedestrian crossing signal lights on a one-way or two-way road, so as to improve the traffic efficiency of motor vehicles and reduce the delay of motor vehicles. The utility model belongs to the field of urban road traffic control. Background technique [0002] With the improvement of our country's urban road traffic construction, the "people-oriented" design concept has become the development trend of urban road planning and construction. Among them, providing pedestrians with a certain number of pedestrian crossing facilities to avoid potential safety threats to pedestrians crossing the street caused by urban road traffic is an important embodiment of the "people-oriented" design concept. Pedestrian crossing passages are usually set up at road intersections, and then consider adding pedestrian crossing passages in the middle of the road according to the distance between the intersections, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07
Inventor 王炜陆建胡晓健
Owner SOUTHEAST UNIV
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