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http://dx.doi.org/10.12815/kits.2018.17.6.96

Analysis of Spatial Trip Regularity using Trajectory Data in Urban Areas  

Lee, Su jin (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Jang, Ki tae (The Cho Chun Shik Graduate School for Green Transportation, KAIST)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.17, no.6, 2018 , pp. 96-110 More about this Journal
Abstract
As the development of ICT has made it easier to collect various traffic information, research on creating new traffic attributes is drawing attention. Estimation and forecasts of demand and traffic volume are one of the main indicators that are essential to traffic operation, assuming that the traffic pattern at a particular node or link is repeated. Traditionally, a survey method was used to demonstrate this similarity on trip behavior. However, the method was limited to achieving high accuracy with high costs and responses that relied on the respondents' memory. Recently, as traffic data has become easier to gather through ETC system, smart card, studies are performed to identify the regularity of trip in various ways. In, this study, route-level trip data collected in Daegu metropolitan city were analyzed to confirm that individual traveler forms a spatially similar trip chain over several days. For this purpose, we newly define the concept of spatial trip regularity and assess the spatial difference between daily trip chains using the sequence alignment algorithm, Dynamic Time Warping. In addition, we will discuss the applications as the indicators of fixed traffic demand and transportation services.
Keywords
Trip regularity; Trip pattern analysis; ATMS; DSRC;
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