A multi-class first-order traffic flow model to explain the disordered behaviour of vehicles

Disordered traffic streams are generally characterised by the presence of numerous vehicle classes having different sizes and operational characteristics. Unlike homogeneous traffic flow, smaller vehicles percolate between the bigger ones, invalidating the lane discipline and therefore requiring a d...

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Published in:Transportmetrica. (Abingdon, Oxfordshire, UK) Oxfordshire, UK), 2022-12, Vol.10 (1), p.48-67
Main Authors: Sreekumar, M., Joshi, S. M., Mathew, Tom V., Chatterjee, Avijit
Format: Article
Language:English
Subjects:
Disordered behaviour
multi-class models
speed function
Traffic flow
Traffic models
Travel time
traversable distance
Vehicles
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description Disordered traffic streams are generally characterised by the presence of numerous vehicle classes having different sizes and operational characteristics. Unlike homogeneous traffic flow, smaller vehicles percolate between the bigger ones, invalidating the lane discipline and therefore requiring a different modelling approach. Each vehicle traverses through a series of opportunities created by other vehicles that are not only viable but also accessible, thus defining a permeable medium. Our objective is to develop an analytical traffic flow model that quantifies such opportunities for individual vehicle classes to traverse downstream. Equilibrium speed functions have been redefined based on a new metric termed as traversable distance. The inter-class flow dynamics of small-sized vehicles has further resulted in a significant reduction in their travel time.
doi_str_mv 10.1080/21680566.2021.1957726
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source Taylor and Francis Science and Technology Collection
subjects Disordered behaviour
multi-class models
speed function
Traffic flow
Traffic models
Travel time
traversable distance
Vehicles
title A multi-class first-order traffic flow model to explain the disordered behaviour of vehicles
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