Intersection turning vehicle number estimating method and system

A vehicle and number technology, which is applied in the field of vehicle movement characteristic law analysis, can solve the problem that the estimation method cannot cover all road sections and has large limitations.

Active Publication Date: 2015-10-28
TONGJI UNIV
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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

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  • Intersection turning vehicle number estimating method and system
  • Intersection turning vehicle number estimating method and system
  • Intersection turning vehicle number estimating method and system

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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 an intersection turning vehicle number estimating method and system. The turning vehicle number estimating method comprises the steps that loop detectors are installed at partial intersections, the number of turning vehicles are detected according to different lane functions, and historical data collection and recording are carried out, so that the number of the vehicles which are going to turn is estimated according to the number of the vehicles entering lanes; and for the road sections without the loop detectors, the number of the vehicles are sampled by GPS data statistics of probe vehicles, and according to the similarity among the intersections, the number of the turning vehicles at the intersections having no loop detectors is calculated according to the number of the turning vehicles at the intersections provided with the loop detectors. By adopting the above method, the road basic facility cost can be effectively saved, and the number of the turning vehicles at the intersections can be precisely estimated. The system is designed according to the above method and comprises a loop detector data collection module, a probe vehicle data collection module and a vehicle number prediction module; in addition, the system is easy to operate and maintain and is strong in 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 Applications(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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