Modeling the Vehicle Merging Behaviors at Urban Expressway On ramp Bottlenecks

doi:10.11908/j.issn.0253-374x.2015.04.010

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Modeling the Vehicle Merging Behaviors at Urban Expressway On ramp Bottlenecks
DOI:
                        10.11908/j.issn.0253-374x.2015.04.010
                    
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                        SUN JianSUN Jian
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
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JIANG ShunJIANG Shun
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
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OUYANG JixiangOUYANG Jixiang
Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China
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Abstract:

Based on the videos of traffic flow at two bottlenecks (Hongxu on ramp and Hongjing on ramp) on Yan’an Expressway in Shanghai, 416 empirical merging behavior samples were collected by extracting trajectories from merging vehicles, as well as each adjacent vehicles. The classification and regression tree (CART) was adopted for modeling three merging situations, the key parameters affecting different merging behaviors were analyzed and the confusion matrix was used to evaluate the result of the classification accuracy. The results show that CART performed well with these data. All the accuracies are over 75%. Moreover, a comparison among CART, classical discrete choice model and naive Bayes classifier was conducted, and the CART shows the best classification results.

Key words:urban expressway; on ramp bottleneck; merging behaviors; classification and regression tree; traffic breakdown

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SUN Jian, JIANG Shun, OUYANG Jixiang. Modeling the Vehicle Merging Behaviors at Urban Expressway On ramp Bottlenecks[J].同济大学学报(自然科学版),2015,43(4):0549~

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Received:June 11,2014
Revised:December 30,2014
Adopted:November 10,2014
Online: April 20,2015
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