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16 February 2023 Research on 2+1 alternate highway setting in mountain area based on VISSIM simulation
Fenglin Hu, Yugang liu, Shaohua Zhang, Hongbo Yi, Gang Liu
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Proceedings Volume 12591, Sixth International Conference on Traffic Engineering and Transportation System (ICTETS 2022); 1259128 (2023) https://doi.org/10.1117/12.2668512
Event: 6th International Conference on Traffic Engineering and Transportation System (ICTETS 2022), 2022, Guangzhou, China
Abstract
For a long time, the operation efficiency of highways in Sichuan plateau mountainous areas has been low, and overtaking accidents occur frequently. In addition, many places are limited by natural conditions and unable to build the two-way four-lane highway. Hence, this paper proposes a new scheme to transform and expand the two-lane road into a 2+1 alternate lane. We used VISSIM software, combined with the actual traffic characteristics of the Sichuan mountainous area, and integrated with the driving behavior features to conduct a simulation analysis on the geometric parameter design, setting influencing factors and applicability of 2+1 alternate highway. It not only fills the domestic research gap but also provides theoretical support for building a safe and efficient mountain traffic system. The study found: This scheme optimizes the service level while improving the operation efficiency. When the proportion of trucks exceeds 20%, prohibiting trucks from passing through overtaking lanes shows relatively higher service levels. 2+1 alternate highways in mountainous areas have significantly better service levels than other options when the overtaking lane length is set to 550-900m, and the speed limit in the single lane is 50-100km/h.
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Fenglin Hu, Yugang liu, Shaohua Zhang, Hongbo Yi, and Gang Liu "Research on 2+1 alternate highway setting in mountain area based on VISSIM simulation", Proc. SPIE 12591, Sixth International Conference on Traffic Engineering and Transportation System (ICTETS 2022), 1259128 (16 February 2023); https://doi.org/10.1117/12.2668512
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KEYWORDS
Roads
Safety
Design and modelling
Transportation
Computer simulations
Analytical research
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