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Keywords = toll plaza diverging area

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19 pages, 2340 KiB  
Article
Safety Evaluation of Toll Plaza Diverging Area Considering Different Vehicles’ Toll Collection Types
by Lu Xing, Daoxing Zou, Yi Fei, Kejun Long and Jie Wang
Appl. Sci. 2023, 13(15), 9005; https://doi.org/10.3390/app13159005 - 6 Aug 2023
Cited by 2 | Viewed by 1906
Abstract
Different toll collection types of vehicles and different distribution of tollbooths lead to the toll plaza diverging area becoming a typical vehicle weaving area with frequent crossing behaviors and conflicts on highways. This study aims to identify contributing factors to conflict risks of [...] Read more.
Different toll collection types of vehicles and different distribution of tollbooths lead to the toll plaza diverging area becoming a typical vehicle weaving area with frequent crossing behaviors and conflicts on highways. This study aims to identify contributing factors to conflict risks of four RP by developing random parameters ordered logit models with heterogeneity in means and variances. The model can flexibly capture the unobserved heterogeneity of the contributing factors in different vehicle-following patterns. Real-world vehicle trajectory data obtained from the toll plaza diverging area in Nanjing, China, are used for model estimation. The results show that vehicle-following patterns with the same toll collection types have a higher percentage of severe conflict risks. The average acceleration of the following vehicles, lane-marking indicator, the initial lanes and lane changes of vehicles are significantly associated with the collision risk levels. The standard deviation of surrogate safety measures of all vehicles in sub-segments are found to differ significantly between vehicle-following patterns. Furthermore, a series of likelihood ratio tests are adopted to test the spatial dependence in sub-segments of the diverging area. The findings of this study could provide valuable information for safety improvement in toll plazas. Full article
(This article belongs to the Special Issue Traffic Safety Measures and Assessment)
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