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Discharging method of vehicles passing intersection and related design method and control system

A design method and technology of intersections, applied in the control of traffic signals and other directions, to achieve the effect of simple control procedures

Inactive Publication Date: 2013-09-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

We call this method the wheel release method

Method used

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  • Discharging method of vehicles passing intersection and related design method and control system
  • Discharging method of vehicles passing intersection and related design method and control system
  • Discharging method of vehicles passing intersection and related design method and control system

Examples

Experimental program
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Effect test

Embodiment

[0139] Take a level intersection with each entrance containing three dedicated lanes on the right and left as an example (as shown in the attached image 3 ), the converted motor vehicle flow rate and the saturated flow rate corrected by various coefficients are as follows:

[0140]

[0141] 1) Green light interval time I

[0142] The speed of the vehicle on the approach road is v a =7.8m / s, the braking time of the vehicle is taken as t s =2s, the distance from the stop line to the conflict point is z=20m, then the green light interval time:

[0143] I = z u a + t s = 20 / 7.8 + 2 = 4.5 s > 3 s

[0144] So take the yellow light time A = 3s, the full red time r = 2s

[0145] 2) Total signal loss time L

[0146] Star...

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Abstract

The invention relates to a discharging method of the vehicles passing an intersection and a related design method and control system. The discharging method comprises the following steps: at a cross intersection of which traffic signal is four-phased, the straight vehicle flow and left-turn vehicle flow in the same inlet direction are discharged under the same signal phase while the green light is turned on, then the red light is turned on; and the discharging operaton is performed at the other three inlets clockwise or anticlockwise in turn, and the right-turn vehicles are discharged according to the demand of the user. Meanwhile, the timing of the signal lights is designed correspondingly and the corresponding control system is provided. By adopting the technical scheme of the invention, under the premise of maintaining the current traffic capacity of the intersection, the traffic signal cycle can be shortened, the utilization rate of the green light can be increased, the delay of the intersection can be reduced, the investment cost and energy consumption of the signal control facility can be reduced, the traffic safety of the intersection can be improved and the traffic management of the intersection can be more humanized. The traffic control system comprises the following combination modules: a traffic controller, a wireless network, interfaces and a display system at each intersection.

Description

technical field [0001] The invention relates to an intersection release method and a control system thereof in the field of traffic management and control in traffic engineering. Background technique [0002] There are generally three types of traffic control and management methods at level intersections: traffic management at uncontrolled intersections, traffic management at priority-controlled intersections, and traffic management at signal-controlled intersections. Signal control will be selected for level intersections that meet the requirements of road function, traffic flow and traffic safety. [0003] Usually, signalized intersections adopt a symmetrical clearance method. For example, at a four-phase signal-controlled intersection, regardless of right-turning vehicles, the signal phases are as follows: two phases for going straight in two symmetrical directions, and two phases for left-turning in two symmetrical directions. This release method has the following disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/07G08G1/08
Inventor 程琳潘涛
Owner SOUTHEAST UNIV
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