CN115331443A - Method and system for managing and controlling traffic flow of longitudinal section of expressway entrance ramp - Google Patents
Method and system for managing and controlling traffic flow of longitudinal section of expressway entrance ramp Download PDFInfo
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- CN115331443A CN115331443A CN202210965979.0A CN202210965979A CN115331443A CN 115331443 A CN115331443 A CN 115331443A CN 202210965979 A CN202210965979 A CN 202210965979A CN 115331443 A CN115331443 A CN 115331443A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
- G08G1/0145—Measuring and analyzing of parameters relative to traffic conditions for specific applications for active traffic flow control
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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Abstract
The invention discloses a traffic flow control method and a traffic flow control system for a longitudinal section of an entrance ramp of a highway, which relate to the technical field of intelligent traffic management, wherein the method comprises the following steps: acquiring traffic flow at the longitudinal section of an entrance ramp of the expressway; acquiring traffic flow of a first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result; realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result; the method and the system can actively adjust the ramp traffic according to the traffic flow within the preset distance.
Description
Technical Field
The invention relates to the technical field of intelligent traffic management, in particular to a method and a system for managing and controlling traffic flow of a longitudinal section of an entrance ramp of a highway.
Background
At present, an expressway ramp is a road on the right side of an exit or entrance of an expressway, and generally refers to a small section of auxiliary connection road sections for vehicles to enter and exit from adjacent auxiliary roads such as main line expressways, elevated roads, bridges and driving tunnels, or land bridges/chutes/lead connection roads of other main lines, and collecting and distributing roads, and is a main traffic construction for constituting road interchange roads. In recent years, the quantity of cars in China increases year by year, the accompanying negative effect is a gradually serious traffic jam phenomenon, and particularly, the traffic jam phenomenon is more serious in the peak period of travel on holidays. How to effectively relieve the congestion of the expressway which gradually grows to be frequent becomes a difficult problem, and the current expressway entrance ramp traffic flow control method is one of effective means for relieving the congestion phenomenon.
However, the ramp serving as the junction, especially the longitudinal section of the entrance ramp of the highway, is very easy to jam, and the existing ramp adjusting method does not consider the flow in front of the ramp, so that a better adjusting effect cannot be achieved.
Therefore, how to provide a ramp flow adjusting method considering the traffic flow in a certain distance in front of the ramp is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a method and a system for managing and controlling traffic flow of a longitudinal section of an entrance ramp of an expressway, which can regulate ramp traffic according to traffic flow within a preset distance, regulate and control the flow of the ramp by combining with main road traffic flow away from the preset distance at the entrance of the ramp, comprehensively regulate the ramp flow, and ensure that vehicles pass through the expressway to the maximum extent, thereby reducing occurrence probability of traffic jam.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for managing and controlling the traffic flow of a longitudinal section of an entrance ramp of a highway comprises the following steps:
acquiring traffic flow at the longitudinal section of an entrance ramp of the expressway;
acquiring traffic flow of a first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result;
and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
Preferably, the specific process of implementing traffic control at the longitudinal section of the entrance ramp according to the comparison result includes:
when the traffic flow at the longitudinal section of the entrance ramp is greater than or equal to the traffic flow of a first preset distance at the longitudinal section of the entrance ramp, directly guiding vehicles at the longitudinal section of the entrance ramp to pass;
when the traffic flow at the entrance ramp longitudinal section is smaller than the traffic flow at the first preset distance at the entrance ramp longitudinal section, acquiring the traffic flow at the second preset distance at the entrance ramp longitudinal section, and comparing the traffic flow at the second preset distance at the entrance ramp longitudinal section with the traffic flow at the first preset distance at the entrance ramp longitudinal section;
when the traffic flow of the second preset distance on the longitudinal section of the entrance ramp is smaller than or equal to the traffic flow of the first preset distance on the longitudinal section of the entrance ramp, sequentially guiding the vehicles within the second preset distance, the vehicles within the first preset distance and the vehicles on the longitudinal section of the entrance ramp to pass.
Preferably, when the traffic flow of the second preset distance at the entrance ramp longitudinal section is greater than the traffic flow of the first preset distance at the entrance ramp longitudinal section, the specific processing procedure includes:
calculating a first traffic flow which can pass through a first preset distance in unit time, a second traffic flow which can pass through a second preset distance in the second preset distance and a third traffic flow which needs to pass through the longitudinal section of the entrance ramp according to the existing traffic flow;
when the sum of the first traffic flow and the second traffic flow is less than or equal to a third traffic flow, predicting the passing time, and informing the waiting vehicle through wireless communication equipment;
and when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, closing the expressway entrance, and using the reserved passing mode for the vehicles which do not pass through.
Preferably, when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, obtaining basic travel information of the vehicles to be passed on the longitudinal section of the entrance ramp of the expressway at the moment, providing an optimal path scheme for the vehicles according to authorization information and dynamic traffic data of the vehicles to be passed, and sending the analyzed real-time path scheme to the vehicles to be passed.
Preferably, the specific process of acquiring the traffic flow at the longitudinal section of the entrance ramp of the expressway comprises the following steps:
acquiring traffic flow data at the longitudinal section of an entrance ramp of the highway through a geomagnetic sensor;
and acquiring traffic flow data at the longitudinal section of the expressway entrance ramp through GPS equipment, and correcting the traffic flow data by combining the traffic flow data acquired by the geomagnetic sensor to obtain the corrected traffic flow.
Further, the present invention also provides a management and control system using any one of the above methods for managing and controlling traffic flow on a longitudinal section of an entrance ramp of a highway, comprising:
the first acquisition module is used for acquiring the traffic flow at the longitudinal section of the expressway entrance ramp;
the second acquisition module is used for acquiring the traffic flow of the first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result;
and the adjusting module is used for comparing the traffic flow with a first preset distance at the longitudinal section of the entrance ramp according to the flow to obtain a comparison result, and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
According to the technical scheme, compared with the prior art, the invention discloses a traffic flow control method and system for the longitudinal section of the ramp at the entrance of the expressway, the traffic flow at the entrance of the ramp and the traffic flow within the first preset distance and the second preset distance away from the entrance of the ramp are considered, the vehicle flow at the entrance of the ramp is timely adjusted according to the flow, when the traffic flow exceeds the adjusting capacity, the basic trip information of the vehicles to be passed at the longitudinal section of the entrance ramp is obtained, the optimal path scheme is provided for the vehicles according to the authorization information and the dynamic traffic data of the vehicles to be passed, the real-time path scheme obtained through analysis is sent to the vehicles to be passed, the flow of the ramp and the main road traffic flow at the preset distance away from the entrance of the ramp are combined for adjustment, the ramp flow is comprehensively adjusted, the vehicles are guaranteed to pass through the expressway to the maximum extent, and the occurrence probability of traffic jam is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an overall flowchart of a method for managing and controlling the traffic flow of a longitudinal section of an entrance ramp of a highway according to the present invention;
fig. 2 is a structural schematic block diagram of a traffic flow management and control system for a longitudinal section of an entrance ramp of an expressway provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawing 1, the embodiment of the invention discloses a method for managing and controlling the traffic flow of a longitudinal section of an entrance ramp of a highway, which comprises the following steps:
acquiring traffic flow at the longitudinal section of an entrance ramp of the expressway;
acquiring traffic flow of a first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result;
and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
In a specific embodiment, the specific process of implementing traffic control at the longitudinal section of the entrance ramp according to the comparison result includes:
when the traffic flow at the longitudinal section of the entrance ramp is greater than or equal to the traffic flow of a first preset distance at the longitudinal section of the entrance ramp, directly guiding vehicles at the longitudinal section of the entrance ramp to pass;
when the traffic flow at the longitudinal section of the entrance ramp is smaller than the traffic flow at the longitudinal section of the entrance ramp by the first preset distance, acquiring the traffic flow at the longitudinal section of the entrance ramp by the second preset distance, and comparing the traffic flow at the longitudinal section of the entrance ramp by the second preset distance with the traffic flow at the longitudinal section of the entrance ramp by the first preset distance;
when the traffic flow of the second preset distance on the longitudinal section of the entrance ramp is smaller than or equal to the traffic flow of the first preset distance on the longitudinal section of the entrance ramp, sequentially guiding the vehicles within the second preset distance, the vehicles within the first preset distance and the vehicles on the longitudinal section of the entrance ramp to pass.
In a specific embodiment, the specific processing when the traffic flow of the second preset distance at the on-ramp longitudinal section is greater than the traffic flow of the first preset distance at the on-ramp longitudinal section includes:
calculating a first traffic flow which can pass through a first preset distance in unit time, a second traffic flow which can pass through a second preset distance in unit time and a third traffic flow which needs to pass through the longitudinal section of the entrance ramp according to the existing traffic flow;
when the sum of the first traffic flow and the second traffic flow is less than or equal to a third traffic flow, predicting the passing time, and informing the waiting vehicles through wireless communication equipment;
and when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, closing the expressway entrance, and using a reserved passing mode for the vehicles which do not pass through.
In a specific embodiment, when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, obtaining basic travel information of a vehicle to be passed on the longitudinal section of the entrance ramp of the expressway at the moment, providing an optimal path scheme for the vehicle according to authorization information and dynamic traffic data of the vehicle to be passed, and sending the real-time path scheme obtained through analysis to the vehicle to be passed.
In a specific embodiment, the specific process of acquiring the traffic flow at the longitudinal section of the expressway entrance ramp comprises the following steps:
acquiring traffic flow data at the longitudinal section of an entrance ramp of the highway through a geomagnetic sensor;
traffic flow data at the longitudinal section of the highway entrance ramp are acquired through GPS equipment, and are corrected by combining the traffic flow data acquired by the geomagnetic sensor, so that the corrected traffic flow is obtained.
Specifically, the specific determination method of the first preset distance and the second preset distance may include the following steps:
presetting a plurality of distance values, calculating the integral connectivity index of the distance values, and sequencing the distance values in a descending order, wherein the determined distance threshold is determined when the integral connectivity index is the maximum.
Referring to fig. 2, an embodiment of the present invention further provides a management and control system for a highway on-ramp longitudinal section traffic flow management and control method according to any one of the above embodiments, including:
the first acquisition module is used for acquiring the traffic flow at the longitudinal section of the highway entrance ramp;
the second acquisition module is used for acquiring the traffic flow of the first preset distance at the entrance ramp longitudinal section and comparing the traffic flow of the entrance ramp longitudinal section with the traffic flow of the first preset distance at the entrance ramp longitudinal section to obtain a comparison result;
and the adjusting module is used for comparing the traffic flow with a first preset distance at the longitudinal section of the entrance ramp according to the flow to obtain a comparison result, and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the traffic control method according to any one of the above embodiments.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A traffic flow control method for a longitudinal section of an entrance ramp of a highway is characterized by comprising the following steps:
acquiring traffic flow at the longitudinal section of an entrance ramp of the expressway;
acquiring traffic flow of a first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result;
and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
2. The method for managing and controlling the traffic flow of the longitudinal section of the highway on-ramp according to claim 1, wherein the specific process of realizing the traffic management and control of the longitudinal section of the on-ramp according to the comparison result comprises the following steps:
when the traffic flow at the longitudinal section of the entrance ramp is greater than or equal to the traffic flow of a first preset distance at the longitudinal section of the entrance ramp, directly guiding vehicles at the longitudinal section of the entrance ramp to pass;
when the traffic flow at the entrance ramp longitudinal section is smaller than the traffic flow at the first preset distance at the entrance ramp longitudinal section, acquiring the traffic flow at the second preset distance at the entrance ramp longitudinal section, and comparing the traffic flow at the second preset distance at the entrance ramp longitudinal section with the traffic flow at the first preset distance at the entrance ramp longitudinal section;
when the traffic flow of the second preset distance on the longitudinal section of the entrance ramp is smaller than or equal to the traffic flow of the first preset distance on the longitudinal section of the entrance ramp, sequentially guiding the vehicles within the second preset distance, the vehicles within the first preset distance and the vehicles on the longitudinal section of the entrance ramp to pass.
3. The method for managing and controlling the traffic flow of the longitudinal section of the entrance ramp of the expressway according to claim 2, wherein when the traffic flow of the second preset distance at the longitudinal section of the entrance ramp is greater than the traffic flow of the first preset distance at the longitudinal section of the entrance ramp, the specific processing procedure comprises the following steps:
calculating a first traffic flow which can pass through a first preset distance in unit time, a second traffic flow which can pass through a second preset distance in unit time and a third traffic flow which needs to pass through the longitudinal section of the entrance ramp according to the existing traffic flow;
when the sum of the first traffic flow and the second traffic flow is less than or equal to a third traffic flow, predicting the passing time, and informing the waiting vehicles through wireless communication equipment;
and when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, closing the expressway entrance, and using a reserved passing mode for the vehicles which do not pass through.
4. The method for managing and controlling the traffic flow on the vertical section of the expressway entrance ramp according to claim 3, wherein when the sum of the first traffic flow and the second traffic flow is greater than the third traffic flow, basic travel information of vehicles to be passed on the vertical section of the expressway entrance ramp at the moment is acquired, an optimal path scheme is provided for the vehicles according to authorization information and dynamic traffic data of the vehicles to be passed, and the analyzed real-time path scheme is sent to the vehicles to be passed.
5. The method for managing and controlling the traffic flow of the longitudinal section of the expressway entrance ramp according to claim 1, wherein the specific process of acquiring the traffic flow at the longitudinal section of the expressway entrance ramp comprises the following steps:
acquiring traffic flow data at the longitudinal section of an entrance ramp of the highway through a geomagnetic sensor;
and acquiring traffic flow data at the longitudinal section of the expressway entrance ramp through GPS equipment, and correcting the traffic flow data by combining the traffic flow data acquired by the geomagnetic sensor to obtain the corrected traffic flow.
6. A management and control system for a highway entrance ramp longitudinal section traffic flow management and control method according to any one of claims 1 to 5, comprising:
the first acquisition module is used for acquiring the traffic flow at the longitudinal section of the expressway entrance ramp;
the second acquisition module is used for acquiring the traffic flow of the first preset distance at the longitudinal section of the entrance ramp, and comparing the traffic flow at the longitudinal section of the entrance ramp with the traffic flow of the first preset distance at the longitudinal section of the entrance ramp to obtain a comparison result;
and the adjusting module is used for comparing the traffic flow with a first preset distance at the longitudinal section of the entrance ramp according to the flow to obtain a comparison result, and realizing traffic control at the longitudinal section of the entrance ramp according to the comparison result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210965979.0A CN115331443A (en) | 2022-08-12 | 2022-08-12 | Method and system for managing and controlling traffic flow of longitudinal section of expressway entrance ramp |
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| CN202210965979.0A CN115331443A (en) | 2022-08-12 | 2022-08-12 | Method and system for managing and controlling traffic flow of longitudinal section of expressway entrance ramp |
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2022
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| US20220076570A1 (en) * | 2020-09-08 | 2022-03-10 | Tongji University | Collaborative controlling method of variable speed limit and ramp metering for expressways based on crash risk |
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