Method and device for obtaining traffic jam index

Abstract

The embodiment of the invention provides a method and device for obtaining a traffic jam index and relates to the field of traffic information. When the traffic jam index is obtained, user mental feelings and the external environment are considered additionally, and the problem that evaluation of a traffic jam from a traffic jam index obtained from the prior art is not accurate is solved. The method includes the steps that traffic flow data are obtained and a speed kernel function expressing the influence on the traffic jam index from the speed is established; weather identification is obtained and a weather influence function expressing the influence on the traffic jam index from the weather is established; time quantum identification is obtained and a subjective feeling function expressing the influence on the traffic jam index from the user mental feelings is established; through the speed kernel function, the weather influence function and the subjective feeling function, a traffic jam index calculation model is generated, and the traffic jam index is obtained through the traffic jam index calculation model. The method is used for obtaining the traffic jam index.

Description

technical field [0001] The invention relates to the field of traffic information, in particular to a method and device for acquiring traffic congestion index. Background technique [0002] With the continuous development of social economy and the continuous increase of car ownership, the problem of traffic congestion is becoming more and more serious. In the prior art, a traffic congestion index is usually used to evaluate road traffic congestion conditions, wherein the traffic congestion index is obtained by quantifying the degree of road congestion using traffic flow data. [0003] Specifically, the prior art obtains the traffic congestion index generally starting from the speed value itself, for example, the TSI (Traffic Speed ​​Index, speed index) is obtained through the actual road speed Vi and the road free flow speed Vfi: [0004] TSI=Vi / Vfi, [0005] And get traffic congestion index TPI (Traffic Performance Index, traffic congestion index) by this TSI: [0006] TP...

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Problems solved by technology

[0008] The present invention provides a method and device for obtaining traffic congestion index. When obtaining traffic congestion index, the user's psychological feeling and external environment are considered, and the traffic congestion index obtained in the prior art is not accurate enough to evaluate traffic congestion. The problem

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