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Determination method of intersection green flashing signal time based on dilemma area theory

A determination method and intersection technology, which is applied in the field of road traffic management and traffic safety, can solve the problem of less research on the time setting method of green flashing signal, and achieve the effect of simple and clear calculation method and good application prospect.

Inactive Publication Date: 2019-04-05
HOHAI UNIV
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Problems solved by technology

At present, most cities in my country add green flashing signals in front of yellow lights, but there is little research on the time setting method of green flashing signals

Method used

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  • Determination method of intersection green flashing signal time based on dilemma area theory
  • Determination method of intersection green flashing signal time based on dilemma area theory
  • Determination method of intersection green flashing signal time based on dilemma area theory

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Embodiment Construction

[0045] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0046] like figure 1 and 2 As shown, a method for determining the time of a green flashing signal light at an intersection, the steps of the method are:

[0047]Step 1: Obtain the video data of the vehicle passing through the signalized intersection during the signal conversion period through on-site observation at the signalized intersection selected as the experimental road section, and use the video processing software (Tracker) to obtain the instantaneous speed of the vehicle at a certain moment and the speed change curve within a specific period of time , further screening and data processing to get the effective first parking data when the green flashes on, including the speed of the entrance lane v 0 (km / h), driver perception reaction time t r (s), maximum stop deceleration a - (m / s 2 ), and the valid last driving data when the green fl...

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Abstract

The invention discloses a determination method of intersection green flashing signal time based on a dilemma area theory. According to the determination method of the intersection green flashing signal time based on the dilemma area theory, by building a green flashing signal time model based on the dilemma area theory, and through a linear regression model, the relation between a car speed at anentrance driveway of a junction and perceptual response time, and the relation between a maximum cut-off decelerating rate and a maximum passing accelerating rate are obtained, and finally, an intersection green flashing signal time valve is calculated after the green flashing signal time model is substituted. According to the determination method of the intersection green flashing signal time based on the dilemma area theory, the problem that a driver is caught in a dilemma area when passing through a signal intersection is avoided, and evidences that the intersection signal control is improved by a traffic management department and that suitable green flashing signal time is set are provided.

Description

technical field [0001] The invention belongs to the field of road traffic management and traffic safety, in particular to a method for determining the time of a green flashing signal at an intersection based on the theory of distressed areas. Background technique [0002] The green flashing signal (referred to as "green flashing") is part of the signal transition period. It mainly provides the information that the green light ends and the yellow light turns on, reminding the driver to be ready to stop or pass the intersection. A reasonable setting of the green flashing signal can effectively reduce the phenomenon of "running the yellow light" at the intersection; too short or too long signal duration will make some vehicles unable to safely pass through the intersection or stop safely, causing the driver to fall into a troubled area, thereby Cause emergency braking or red light behavior to induce traffic accidents. Therefore, in order to improve the safety performance of th...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/052G08G1/08G08G1/09
CPCG08G1/0104G08G1/0125G08G1/052G08G1/08G08G1/09
Inventor 袁黎蔡尧季丹丹何娟张誉
Owner HOHAI UNIV
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