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Title: Kriging based saturation flow models for traffic conditions in Indian cities
Authors: Saha A.
Chakraborty S.
Chandra, Satish
Ghosh, Indrajit
Published in: Transportation Research Part A: Policy and Practice
Abstract: Saturation flow is crucial for designing the signal cycle and the corresponding green phase at an intersection. Therefore, it is important to compute saturation flow with a higher order of accuracy. Highway capacity manual (HCM) has provided a saturation flow model for homogeneous traffic condition with strict lane discipline. However, traffic in many parts of the world is highly heterogeneous and hence, it is necessary to develop saturation flow models for such situations. To this end, this paper presents saturation flow models for heterogeneous traffic conditions. To be specific, four saturation flow models based on Kriging variants have been proposed. Unlike available saturation flow models, the proposed models consider the effect of both geometric and traffic characteristics. Field data from fifteen intersections located in five different cities of India – Delhi, Patiala, Chandigarh, Mumbai and Panchkula – are used for developing and validating the models. Results obtained using the proposed models have been compared with other saturation flow models available in the literature. It is observed that the proposed models yield superior results outperforming existing saturation flow models. © 2018
Citation: Transportation Research Part A: Policy and Practice(2018), 118(): 38-51
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Correlation function
Heterogeneous traffic
Kriging variants
Saturation flow
ISSN: 9658564
Author Scopus IDs: 57195251895
Author Affiliations: Saha, A., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Chakraborty, S., Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame46556, United States
Chandra, S., CSIR – Central Road Research Institute (CRRI), New Delhi, 110025, India
Ghosh, I., Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Corresponding Author: Saha, A.; Department of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email:
Appears in Collections:Journal Publications [CE]

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