Arrangement method of expressway merging area prohibition afflux line

A technology that prohibits the entry of highways and is used in the traffic control system of road vehicles, roads, roads and other directions, which can solve problems such as easily causing traffic accidents, and achieve the effect of reducing potential safety hazards, improving safety, and avoiding traffic accidents.

Active Publication Date: 2017-09-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the problem existing in the prior art in the merging area of ​​the expressway, the on-ramp vehicle does not fully accelerate and enters the main line ahead of time, which is very likely to cause traffic accidents. Accelerate completely, reduce the speed difference, and improve the safety of the expressway merge area. The setting method of the prohibited merge line in the expressway merge area

Method used

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  • Arrangement method of expressway merging area prohibition afflux line
  • Arrangement method of expressway merging area prohibition afflux line
  • Arrangement method of expressway merging area prohibition afflux line

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 As shown, a method for setting a prohibited merge line in a highway merge area according to the present invention comprises the following steps:

[0047] 1) Collect basic traffic data in the expressway merging area, the data content includes: freeway main line traffic volume, freeway main line outer lane traffic volume, ramp traffic volume, main line vehicle running speed, ramp vehicle running speed, ramp vehicle merging speed, merging nose End marking line length Ln ; If the traffic volume of the outer lane of the main line of the expressway cannot be obtained through actual measurement, it can be estimated according to the following formula:

[0048] Q=136+0.345Q f -0.115Q r

[0049] In the formula, Q f is the traffic volume of the main line of the expressway, veh / h; Q r is the ramp traffic volume, veh / h.

[0050] If the merging speed of ramp vehicles cannot be obtained from the measured data, it can be estimated according to the following formu...

Embodiment 2

[0072] Taking a merge area on the southwest side of the Maqun Junction in Nanjing as an example, the setting method of the prohibited merge line in the expressway merge area is explained in detail.

[0073] 1) After investigation, the basic traffic data of the confluence area are shown in Table 1 below:

[0074]

[0075] According to the calculation formula of the outer traffic volume of the main line, the traffic volume of the outer lane of the main line can be calculated Q=589pcu / h; according to the calculation formula of the merging speed, V can be obtained m = 65km / h.

[0076] 2) The minimum influx distance in the low density state is The relevant data can be brought into the calculation, L low =90m.

[0077] 3) In the state of medium density, the distance of the acceleration section of the confluence is Relevant data can be substituted into the calculation, L a =20m.

[0078] 4) The traffic volume of the outer lane of the main line is Q=589pcu / h, so the headway...

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Abstract

The present invention discloses an arrangement method of an expressway merging area prohibition afflux line. The method comprises the following steps: 1) basic traffic data collection of an expressway merging area; 2) calculating the shortest afflux distance in a low-density state; 3) calculating the shortest afflux distance in a medium-density state; and 4) determining the length of the prohibition afflux line. The arrangement method of the expressway merging area prohibition afflux line can effectively improve the phenomenon that vehicles at the ramp of the expressway merging area do not completely accelerate to merge a main line so as to effectively avoid the traffic accidents caused by speed difference of vehicles on the main line and the vehicle on the ramp and facilitate safe improving and lifting of the expressway merging area.

Description

technical field [0001] The invention belongs to the technical field of traffic markings, and in particular relates to a method for setting prohibited merge lines in merge areas of expressways. Background technique [0002] In the expressway merging area, the inflow of ramp vehicles usually interferes with the smooth operation of the main line vehicles, and due to the lack of effective traffic management measures, the ramp vehicles often enter the main line without accelerating completely, and the excessive speed difference can easily cause traffic congestion. ACCIDENT. Traffic marking is a practical and effective traffic management facility with strong practical operability. Therefore, traffic marking can be used to guide and manage the on-ramp vehicle merging behavior. [0003] Comparing the regulations on the setting of traffic markings between my country and western developed countries, we can see that: my country's regulations "Road Traffic Signs and Markings" (GB5768-2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01E01C1/00
CPCE01C1/002G08G1/0125G08G1/0137
Inventor 顾欣项乔君郑展骥李燊么娆张婷郭一凡
Owner SOUTHEAST UNIV
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