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Overflow early-warning method according to vehicle-passing data

A technology of passing vehicle data and vehicles, which is applied in the traffic control system of road vehicles, traffic flow detection, instruments, etc., and can solve the problems of inability to effectively predict the law of traffic flow changes in road sections, advance warning information, and false alarms

Active Publication Date: 2019-01-08
南京市公安局交通管理局
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Problems solved by technology

However, by adding equipment, the economic cost investment is directly increased, and the overflow research and judgment is carried out through the vehicle passing information of a fixed section, and there are phenomena such as early warning information and false alarms. Early warning information cannot be quantified

Method used

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  • Overflow early-warning method according to vehicle-passing data
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  • Overflow early-warning method according to vehicle-passing data

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Embodiment Construction

[0027] The method of the invention will be further described below in conjunction with the accompanying drawings and examples.

[0028] Spillover risk identification model of the present invention includes traffic signal control parameters and intersection matrix based on GIS map, specifically refer to figure 1 , defined as follows:

[0029] Traffic signal control parameters: through the traffic signal control system, obtain parameters such as the time period plan, cycle duration, and phase duration of intersection signal control;

[0030] The intersection matrix based on the GIS map includes road section information, road section inflow traffic flow and road section outflow traffic flow.

[0031] Road section information includes road section direction, azimuth, number of lanes, entry lane list, exit lane list, etc. The road section direction takes four directions: north, east, south, and west; azimuth angle is the clockwise offset of the road section from true north. The ra...

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Abstract

The invention discloses an overflow early-warning method according to vehicle-passing data. Vehicle entering / exiting flow rates at different moments of an upstream and a downstream of a road segment are analyzed based on a phase sequence and phase duration of a signal control scheme, a road segment vehicle bearing capacity is analyzed based on a GIS (geographic information system) map, and a dataanalysis model is constructed based on a vehicle-passing information rule at the downstream of the road segment, and finally, the overflow risk quantization and early-warning are performed.

Description

technical field [0001] The invention belongs to the field of traffic early warning, in particular to an overflow early warning method based on passing vehicle data. Background technique [0002] With the development of the economy, the number of motor vehicles in my country continues to rise, and the management and control of urban traffic signals are facing huge challenges. In order to make reasonable and effective use of urban road space, improve the efficiency of urban traffic operation, and alleviate the "deadlock" phenomenon of traffic flow at intersections, the monitoring, prediction and management of road traffic flow operation status have become urgent problems in the transportation field. [0003] At present, the traditional overflow detection method is to add detection equipment such as coils, geomagnetism, microwave, video, RFID, etc. within a certain distance from the upstream of the road section to the upstream intersection exit, to detect the passing informatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G08G1/065
CPCG08G1/0145G08G1/065
Inventor 顾怀中石巍鞠京民程健陈淼张继锋于焕凯窦亮
Owner 南京市公安局交通管理局
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