Abstract
Lane-changing events are often related with safety concern and traffic operational efficiency due to complex interactions with neighboring vehicles. In particular, lane changes in stop-and-go traffic conditions are of keen interest because these events lead to higher risk of crash occurrence caused by more frequent and abrupt vehicle acceleration and deceleration. From these perspectives, in-depth understanding of lane changes would be of keen interest in developing in-vehicle driving assistance systems. The purpose of this study is to analyze vehicle interactions using vehicle trajectories and to identify factors affecting lane changes with stop-and-go traffic conditions. This study used vehicle trajectory data obtained from a segment of the US-101 freeway in Southern California, as a part of the Next Generation Simulation (NGSIM) project. Vehicle trajectories were divided into two groups; with stop-and-go and without stop-and-go traffic conditions. Binary logistic regression (BLR), a well-known technique for dealing with the binary choice condition, was adopted to establish lane-changing decision models. Regarding lane changes without stop-and-go traffic conditions, it was identified based on the odd ratio investigation that he subject vehicle driver is more likely to pay attention to the movement of vehicles ahead, regardless of vehicle positions such as current and target lanes. On the other hand, the subject vehicle driver in stop-and-go traffic conditions is more likely to be affected by vehicles traveling on the target lane when deciding lane changes. The two BLR models are adequate for lane-changing decisions in normal and stop-and-go traffic conditions with about 80 % accuracy. A possible reason for this finding is that the subject vehicle driver has a tendency to pay greater attention to avoiding sideswipe or rear-end collision with vehicles on the target lane. These findings are expected to be used for better understanding of driver’s lane changing behavior associated with congested stop-and-go traffic conditions, and give valuable insights in developing algorithms to process sensor data in designing safer lateral maneuvering assistance systems, which include, for example, blind spot detection systems (BSDS) and lane keeping assistance systems (LKAS).
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Abbreviations
- v n :
-
subject vehicle speed, ft/sec
- v n−1 :
-
front vehicle speed, ft/sec
- v k :
-
lag vehicle speed, ft/sec
- v k−1 :
-
lead vehicle speed, ft/sec
- S n-1n :
-
front spacing between subject and front vehicles, feet
- S k-1n :
-
lead spacing between subject and lead vehicles, feet
- S kn :
-
lag spacing between subject and lag vehicles, feet
- S k-1k :
-
lead-lag spacing between lead and lag vehicles, feet
- X n :
-
a vector of explanatory variable representing factors affecting lane changes
- β n :
-
a vector of parameters to be estimated
- LC n :
-
when subject vehicle changes lane, LC n = 1, otherwise, LC n = 0
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Oh, C., Choi, J. & Park, S. In-depth understanding of lane changing interactions for in-vehicle driving assistance systems. Int.J Automot. Technol. 18, 357–363 (2017). https://doi.org/10.1007/s12239-017-0036-2
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DOI: https://doi.org/10.1007/s12239-017-0036-2