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A Random Effects Model for Travel-Time Variability Analysis Using Wi-Fi and Bluetooth Data
| 题名： | A Random Effects Model for Travel-Time Variability Analysis Using Wi-Fi and Bluetooth Data |
| 正文语种： | eng |
| 作者： | Ghavidel, Mohammad;Khademi, Navid;Samani, Ehsan Bahrami;Kieu, Le-Minh |
| 作者单位： | Univ Tehran Coll Engn Sch Civil Engn Tehran 456311155 Iran;Univ Tehran Coll Engn Sch Civil Engn Tehran 456311155 Iran;Shahid Beheshti Univ Fac Math Dept Stat Tehran 1983969411 Iran;Univ Auckland Dept Civil & Environm Engn Auckland 1010 New Zealand |
| 关键词： | Travel-time distribution;Statistical model;Reliability;Wi-Fi and Bluetooth sensors |
| 摘要： | This study examined variations in travel time through a random-effects model using Wi-Fi and Bluetooth data. Previous studies mainly divided a day into discrete time windows and estimated an individual distribution function for each window. However, this overlooks the interrelated nature of travel time among the different time windows of a day. The present research suggests a conditional random-effects model that portrays time-varying travel time as a continuous phenomenon. It was shown that the lognormal probability distribution is the best-fitted unimodal distribution. It was hypothesized that the conditional model with a lognormal distribution as the best-fitting choice associated with random effects, it better fits real data than do existing models in the literature. The proposed model demonstrated a strong relationship between the mean and the standard deviation of travel time, and between these two factors and time of day. The travel time data obtained from Wi-Fi and Bluetooth detectors on a highway section of Tehran, Iran were used as a case study. |
| 出版年： | 2022 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 148 |
| 期： | 2 |
| 页码： | 05021012.1-05021012.11 |
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