A method and system for estimating the number of turning vehicles at an intersection

A vehicle and number technology, applied in the field of vehicle movement characteristic law analysis, can solve problems such as large limitations and the inability of estimation methods to cover all road sections.

Active Publication Date: 2017-10-31
TONGJI UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Traditional traffic data collection methods include cameras, ground induction coils, etc. Due to installation and maintenance costs and other reasons, not all intersections are equipped with ground induction coils, cameras and other infrastructure. Therefore, traditional estimations that only rely on coils and cameras The method cannot cover all road sections and has great limitations

Method used

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  • A method and system for estimating the number of turning vehicles at an intersection
  • A method and system for estimating the number of turning vehicles at an intersection
  • A method and system for estimating the number of turning vehicles at an intersection

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Embodiment Construction

[0028] one

[0029] Such as figure 1 As shown, the method for estimating the number of turning vehicles at intersections divides the time period participating in the estimation into several time intervals according to equal lengths, and the length of each time interval is T. At the beginning of each T, it is necessary to Estimate the number of left-turning, right-turning, and straight-going vehicles that are about to turn; and, taking T as the length of the reference time period, set the integer w as the number of time T included in the time window, that is, W=w×T is The length of the time window. Based on this time plan, the method for estimating the number of turning vehicles at the intersection includes the following three modules and submodules thereof:

[0030] (1) Data collection module, which is responsible for collecting data related to the number of vehicles at intersections. The data that described data collection module needs to collect is divided into two kinds,...

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Abstract

The invention provides a method and system for estimating the number of turning vehicles at an intersection. The method of estimating the number of turning vehicles is: install loop detectors at some intersections, detect the number of turning vehicles according to different lane functions, and collect and record historical data. Therefore, it is possible to estimate the number of vehicles that are about to enter the road. the number of vehicles; for the sections without coils, use the GPS data of probe vehicles to count the number of sampling vehicles, and according to the similarity between intersections, calculate the number of vehicles without coils from the number of turning vehicles at intersections with coils. The number of turning vehicles at the intersection. The above method can effectively save the cost of road infrastructure, and at the same time can estimate the number of turning vehicles at intersections with high precision. The system of the present invention is designed according to the above method, and includes a coil data collection module, a detection vehicle data collection module and a vehicle number prediction module. The system is easy to implement and maintain, and has strong feasibility.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method and a system for analyzing and using vehicle movement characteristic rules in intelligent transportation. Background technique [0002] The Intelligent Transportation System (ITS) is a large-scale, comprehensive system established by effectively integrating advanced information technology, data communication transmission technology, electronic sensing technology, control technology and computer technology into the entire ground traffic management system. It is a real-time, accurate and efficient integrated transportation management system that plays a role in location. In the intelligent transportation system, traffic regulation at the intersection is an important content. If it is possible to accurately estimate the number of vehicles waiting to turn in each direction and the number of turning vehicles that are about to arrive in the vehicles at the intersecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/01
Inventor 王成邵禄张军旗张真真周劼人
Owner TONGJI UNIV
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