Left-turn intersection guide line and left-turn stop line design method

A technology for left-turn intersections and design methods, which is applied to roads, roads, buildings, etc., and can solve problems such as reducing the safety of intersections, not considering the alignment requirements of guide lines at left-turn intersections, and conflicts between left-turning vehicles

Active Publication Date: 2021-02-19
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing method causes the left-turning vehicle to pass through ahead of the straight-going vehicle, which reduces the safety of the intersection, and does not take into account the linear requirements of the guide line of the left-turning intersec

Method used

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  • Left-turn intersection guide line and left-turn stop line design method
  • Left-turn intersection guide line and left-turn stop line design method
  • Left-turn intersection guide line and left-turn stop line design method

Examples

Experimental program
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Example Embodiment

[0025]Specific implementation manner 1: The specific process of a design method for a left-turn intersection guide line and a left-turn stop line in this embodiment is:

[0026]Step 1. Determine the intersection coordinate system and parameters;

[0027]Step 2. Determine the constraint conditions of the guide line at the left turn intersection;

[0028]Step 3. Based on Step 2, judge whether you get the guidance line for the left-turn intersection. If you get the guidance line for the left-turn intersection, draw the left-turn intersection guidance line on the basis of the left-turn stop line position; if you cannot get the left-turn intersection guidance Line, go to step four;

[0029]Step 4. Make the left-turn intersection lead to the inside lane, change the position of the stop line, and regain the left-turn intersection guide line.

Example Embodiment

[0030]Second embodiment: This embodiment is different from the first embodiment in that the intersection coordinate system and parameters are determined in the first step; the specific process is:

[0031]In order to facilitate quantitative research, firstly establish a rectangular coordinate system for the intersection. Such asfigure 1 As shown, the straight line between the left-turning vehicle entrance lane and the opposite roadway is taken as the x-axis, and the left-turning lane parking line of the entry lane is taken as the y-axis to establish an intersection rectangular coordinate system, and the positive direction of the x-axis points to this Turn left in the direction of the exit lane directly in front of the entrance lane of the vehicle, and the positive direction of the y-axis points to the direction of the exit lane that the left-turning vehicle will enter;

[0032]The parameter is: wt, We, Le, Lc, Li;

[0033]wtIs the distance from the x-axis to the left edge of the first non-le...

Example Embodiment

[0043]Specific embodiment three: this embodiment is different from specific embodiment one or two in that in the second step, the constraint condition of the guide line of the left turn intersection is determined; the specific process is:

[0044]According to the movement trajectory of the left-turn traffic flow in the intersection, the design of the left-turn intersection guide line should focus on the position of three constraint points: the starting point of turning caused by the position constraint of the entrance, the end point of turning caused by the constraint of the exit position, The conflict restriction point caused by the impact of the through traffic. The coordinate values ​​of each constraint point are discussed below.

[0045](1) Determine the coordinates of the steering start point

[0046]The steering start point is the place where the left-turning vehicle starts to turn at the intersection entrance. Considering that the driver is driving on the left side of the vehicle, the...

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Abstract

The invention discloses a method for designing a left-turn intersection guide line and a left-turn stop line and relates to a method for designing a left-turn intersection guide line and a left-turn stop line. The method aims to solve problems that in an existing method, a left-turn vehicle collides with a straight-going vehicle in advance, intersection safety is reduced, the linear requirement ofa left-turn intersection guide line is not considered, and the left-turn vehicle collides with a waiting vehicle on a lateral entrance lane and a right-turn vehicle on an opposite entrance lane easily. The method comprises the following steps of 1, determining an intersection coordinate system and parameters; 2, constraint conditions of a left-turn intersection guide line being determined; 3, judging whether a left-turn intersection guide line is obtained or not, and if so, drawing the left-turn intersection guide line on the basis of the position of the existing left-turn stop line; if not,executing the step 4; and 4, the left-turn intersection wire being connected with the inner lane in sequence, the position of the stop line being changed, and the left-turn intersection guide line being obtained again. The method is applied to the field of urban road intersection channelization.

Description

technical field [0001] The invention relates to the channelization technology of urban road intersections, in particular to the design method of guide lines and left-turn stop lines at left-turn intersections. Background technique [0002] At the left-turn permission phase intersection, the through-going traffic flow should have the right of way, but the phenomenon of rushing through the left-turning traffic flow occurs frequently, and the leading vehicle turning left will choose the shortest path as close to the entrance road as possible, making potential conflict points more serious. Get close to yourself to ensure that you can pass through the intersection before the through traffic, and then guide a left-turning caravan to pass through the intersection, causing a large delay to the oncoming straight traffic. [0003] According to the "Code for the Setting of Urban Road Traffic Signs and Markings" (GB51038-2015), when the level intersection has a large area, the traffic o...

Claims

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Application Information

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IPC IPC(8): E01C1/00E01C1/02G08G1/01
CPCE01C1/002E01C1/02G08G1/01
Inventor 白乔文宋现敏陶楚青闫红日
Owner JILIN UNIV
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