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The Journal of The Korea Institute of Intelligent Transport Systems Vol.9 No.6 pp.33-42
UTIS 구간통행속도 이상치 제거 알고리즘
Error Filtering Algorithm for Accurate Travel-Speed Measurement Using UTIS
Abstract
Travel speed is an important parameter in measurement of road traffic. UTIS(Urban Traffic Information System) was developed as a type of section detector. However, UTIS incur errors caused by irregular vehicle trajectories, wireless communication range and so on. This paper suggests a new model that use an error-filtering algorithm to improve the accuracy of travel speed measurements. In the field test, the variance of the percent errors measured by the new model was reduced. Therefore, it can be concluded that the proposed model significantly improves travel speed measuring accuracy.
