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http://dx.doi.org/10.12815/kits.2019.18.5.142

A Study on the Standard Link-based Travel Speed Calculation System Using GPS Tracking Information  

Song, Gil jong (Transportation Team, Research Institute, NZERO Corporation)
Hwang, Jae Seon (Research Institute, NZERO Corporation)
Lim, Jae Jung (Research Institute, NZERO Corporation)
Jung, Eui Yong (NZERO Corporation)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.18, no.5, 2019 , pp. 142-155 More about this Journal
Abstract
This study was conducted with the aim of developing a system to collect taxi GPS probe information to prevent link defects and to improve the accuracy of the standard link-based travel speed by determining when to go into and come out the link. For this purpose, a framework and algorithm consisting of a five-step process for standard link-based map matching and individual vehicle travel speed are presented and used it to calculate the average travel speed of the service link. Two on-site surveys of Teheran and Hakdong-ro were conducted to verify the results by the methods proposed in this paper. On the basis of the overall time of the field survey, the deviation in the travel speed was 0.2 km/h and 0.6 km/h, the accuracy was 99% and 96%, and the MAPE(Mean Absolute Percentage Error) was 1% and 4% in Teheran and Hakdong-ro, respectively. These results were more accurate thand those obtained using conventional methodologies without standard links.
Keywords
GPS probe; Map matching; Standard link; Service link; Travel speed;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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