Mapping method of urban road traffic demand and control
A technology of road traffic and mapping methods, applied in the direction of controlling traffic signals, instruments, data processing applications, etc., can solve problems such as inability to effectively meet traffic needs and control strategies, and achieve simple and practical scene definition methods, improve accuracy, and versatility Good results
Active Publication Date: 2019-02-26
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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[0003] Aiming at the problem that the current urban road intersection traffic state discrimination cannot effectively satisfy the matching of traffic demand and control strategy, the present invention proposes a mapping method for urban road traffic demand and control, which can realize the mapping of traffic demand to control strategy, and accurately identify
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[0066] exist figure 1In , it is described that defining traffic scenarios as the mapping of traffic demand to traffic control strategies is a prerequisite for implementing precise control strategies. The reason is that the implementation of traditional intersection control strategies generally considers general control (undersaturation, saturation) and special control (bus priority, tram, emergency rescue, etc.) separately. Saturation control or undersaturation control can be implemented by using traffic state discrimination for ordinary control; special control implements targeted detection and control based on the deployed special detection means. However, the segmentation control method under the same time and space fails to fully consider the composition of the relevant actual traffic demand, and it is difficult to reflect the multi-level traffic status of the controlled intersection. Therefore, it is necessary to propose a method that can uniformly represent the mapping ...
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The invention discloses a mapping method of urban road traffic demand and control. A traffic scene is described in a quintuple form, which is divided into five layers: the first layer is used to describe original data obtained by wide area radar, video, vehicle networking and other detection methods; the second layer is used to describe data after processing of the original data according to demands; the third layer is used to describe a weighted synthetical index of a definite scene; the fourth layer is used to describe a basic layer scenario, including undersaturation and supersaturation; the fifth layer is used to describe an overlay scenario, which is built based on the basic layer scenario and is used to connect control strategies. Through the quintuple form, the mapping from trafficdemands to control strategies can be effectively established, and a variety of traffic needs can be identified, and a systematic, complete, implementable technical scheme is provided.
Description
technical field [0001] The invention belongs to the field of urban road traffic control, in particular to a mapping method for urban road traffic demands to signal control strategies, which is a method for defining urban traffic scenes. Background technique [0002] Controlled intersection is an important node of urban road traffic and the main object of traffic control. Due to the multi-dimensional, complex and time-varying characteristics of traffic demand, accurate identification of traffic demand is a prerequisite for implementing effective control strategies. The traditional controlled intersections can obtain more accurate results in judging the supersaturation state, but they fail to fully consider the composition of the actual traffic demand. In other words, the above methods all default to the singleness of the composition of the traffic demand. Controlled intersections often adopt corresponding control strategies for different traffic demands, and accurate identif...
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IPC IPC(8): G08G1/07G06Q10/06
CPCG06Q10/06393G08G1/07
Inventor 张立立王力张海波何忠贺
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY