Road section travel time monitoring method and device
A technology of travel time and road sections, applied in the field of road section travel time monitoring, can solve the problems of low accuracy and reliability of prediction results, and inability to provide information for travelers
Inactive Publication Date: 2017-08-08
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology
Because it only relies on this single prediction model, the accuracy and reliability of the prediction results are often not high, and it is impossible to provide travelers with more accurate and reliable traffic guidance information
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[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0017] figure 1 A flow chart of a method for monitoring travel time of a link according to an embodiment of the present invention is shown. like figure 1 As shown, the method may include: step S1, within a period of time, sampling the position data of the floating car matched to the monitoring road section through the map matching process; step S2, determining the monitoring road section according to the sampled position data The actual travel time within the time period; step S3, input the actual travel time within the time period into the first prediction model and the second prediction model respectively, to obtain the first predicted travel time of the mon...
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The invention discloses a road section travel time monitoring method and device. The method includes the following steps that: the position data of floating vehicles are sampled in one time interval, wherein the floating vehicles are matched to a monitored road section through a map matching process; actual travel time of the monitored road section in the time interval is determined according to sampled position data; the actual travel time in the time interval is inputted into a first prediction model and a second prediction model respectively, so that first predictive travel time and second predictive travel time of the monitored road section in a next time interval can be obtained; the weight coefficients of the first prediction model and the second prediction model are determined according to historic prediction errors of the first prediction model and the historic prediction errors of the second prediction model; and weighted averaging is performed on the first predictive travel time and the second predictive travel time according to the weight coefficients of the first prediction model and the second prediction model, so that final predictive travel time of the monitored road section in the next time interval can be obtained. With the road section travel time monitoring method and device of the invention adopted, the accuracy and reliability of road section travel time prediction can be improved.
Description
technical field [0001] The invention relates to the field of urban traffic, in particular to a method and device for monitoring travel time of road sections. Background technique [0002] With the growth of urban population and the continuous advancement of modernization, traffic problems have become more and more serious. Daily traffic jams and congestion extremely negatively affect people's normal life and work, and the occurrence of traffic accidents even seriously endangers people's lives. Real-time and effective traffic information is the key for urban traffic control departments to understand traffic conditions, provide travelers with effective information, conduct traffic guidance reasonably to relieve traffic pressure, and solve traffic problems. Road section travel time is one of the important parameters to reflect the traffic situation, and it is also an important indicator to be predicted in the traffic guidance system. [0003] The link travel time prediction i...
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IPC IPC(8): G08G1/01G06Q10/04
Inventor 王秀玲田甜吕芳
Owner INNER MONGOLIA UNIV OF TECH