TY - JOUR
T1 - An s-shaped three-parameter (S3) traffic stream model with consistent car following relationship
AU - Cheng, Qixiu
AU - Liu, Zhiyuan
AU - Lin, Yuqian
AU - Zhou, Xuesong (Simon)
N1 - Funding Information:
The authors would like to thank Prof. Daiheng Ni at University of Massachusetts Amherst, Prof. Rui Jiang at Beijing Jiaotong University, Prof. Xiqun Chen at Zhejiang University, Dr. Xianbiao Hu at Missouri University of Science and Technology, Dr. Wuping Xin at KLD Engineering, P.C. and Mr. Jeffrey Taylor at University of Utah for their discussions, as well as the editor and three anonymous reviewers for their constructive comments. The last author would like to thank Dr. David Hale at Leidos Inc. for his discussions related to FHWA Congestion and Bottleneck Identification Tool.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/11
Y1 - 2021/11
N2 - In this study, a new s-shaped three-parameter (S3) traffic flow model is proposed to represent the relationships between three fundamental variables (i.e., flow, speed, and density) in highway traffic. An s-shaped speed-density function is proposed to capture the speed-density relationship under a wide range of possible densities. A consistent car-following model was derived in terms of the proposed s-shaped speed-density function. Both the S3 macroscopic model and the derived microscopic car-following model were calibrated using real-world traffic data.
AB - In this study, a new s-shaped three-parameter (S3) traffic flow model is proposed to represent the relationships between three fundamental variables (i.e., flow, speed, and density) in highway traffic. An s-shaped speed-density function is proposed to capture the speed-density relationship under a wide range of possible densities. A consistent car-following model was derived in terms of the proposed s-shaped speed-density function. Both the S3 macroscopic model and the derived microscopic car-following model were calibrated using real-world traffic data.
KW - Car following model
KW - S3 traffic flow model
KW - Speed-density function
KW - Traffic flow theory
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U2 - 10.1016/j.trb.2021.09.004
DO - 10.1016/j.trb.2021.09.004
M3 - Article
AN - SCOPUS:85116905764
SN - 0191-2615
VL - 153
SP - 246
EP - 271
JO - Transportation Research Part B: Methodological
JF - Transportation Research Part B: Methodological
ER -