Investigation of Discretionary Lane-Change Characteristics Using Next-Generation Simulation Data Sets |
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Authors: | Qi Wang Zhiheng Li |
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Institution: | 1. Department of Automation, Tsinghua University, Beijing, China;2. Graduate School at Shenzhen, Tsinghua University, Shenzhen, China |
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Abstract: | In this article, we investigate discretionary lane change (DLC) characteristics using Next Generation SIMulation (NGSIM) data sets. We first develop a set of heuristic rules to automatically filter out abnormal samples from a massive trajectory data set and identify DLC trajectories from a mixture of mandatory lane change (MLC) and DLC trajectories. Then, we investigate a variety of DLC characteristics. We demonstrate that the kernel part of every normal DLC trajectory can be approximately depicted by a certain fifth-order polynomial. Moreover, we discuss the definition of begin/end points of DLC actions and show that the duration time of DLC actions follows a log-normal distribution with respect to navigation speed. All the findings can help promote temporal and spatial accuracy of lane changing models. |
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Keywords: | Curve Model Duration Time Lane Change Trajectories Clustering |
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