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Nonstrict Priority Left-Turning Maneuvers with a Permitted Phase at Signalized Intersections: Empirical Study in China
The study investigated the analysis of nonstrict priority left-turning vehicle maneuvers with a permitted phase at signalized intersections, based on field observation at four sites (one with a permitted phase and the others with protected phases) in Changchun, China. Trajectory densities at four cross sections along the turning paths were collected, and the concept of a left-turn group was proposed for discussing the maneuver. Then, analysis was conducted by means of clustering and probability distribution fitting. The results revealed that (1) a significantly wider trajectory distribution appears in permitted left-turning maneuvers than in protected phases; (2) four different maneuvers exist for the leading vehicle of a left-turn group; and (3) following time intervals in a left-turn group have a leptokurtic distribution that can be best fitted by the log-logistic and lognormal models. This study provides a better understanding of the nonstrict priority left-turning maneuver with a permitted phase with respect to operational performance, and offers the basis for further study on permitted left-turning streams, such as their capacity and delay.
Nonstrict Priority Left-Turning Maneuvers with a Permitted Phase at Signalized Intersections: Empirical Study in China
The study investigated the analysis of nonstrict priority left-turning vehicle maneuvers with a permitted phase at signalized intersections, based on field observation at four sites (one with a permitted phase and the others with protected phases) in Changchun, China. Trajectory densities at four cross sections along the turning paths were collected, and the concept of a left-turn group was proposed for discussing the maneuver. Then, analysis was conducted by means of clustering and probability distribution fitting. The results revealed that (1) a significantly wider trajectory distribution appears in permitted left-turning maneuvers than in protected phases; (2) four different maneuvers exist for the leading vehicle of a left-turn group; and (3) following time intervals in a left-turn group have a leptokurtic distribution that can be best fitted by the log-logistic and lognormal models. This study provides a better understanding of the nonstrict priority left-turning maneuver with a permitted phase with respect to operational performance, and offers the basis for further study on permitted left-turning streams, such as their capacity and delay.
Nonstrict Priority Left-Turning Maneuvers with a Permitted Phase at Signalized Intersections: Empirical Study in China
Bai, Qiao-Wen (author) / Chen, Yong-Heng (author) / Qu, Zhao-Wei (author) / Tao, Peng-Fei (author) / Cao, Ning-Bo (author) / Shen, Yao (author)
2016-11-28
Article (Journal)
Electronic Resource
Unknown
Influence of Restricted Sight Distances on Permitted Left-Turn Operation at Signalized Intersections
| Online Contents | 2008
| British Library Online Contents | 2007