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Journal Articles Axioms Year : 2021

A three-phase fundamental diagram from three-dimensional traffic data

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Abstract

This paper uses empirical traffic data collected from three locations in Europe and the US to reveal a three-phase fundamental diagram with two phases located in the uncongested regime. Model-based clustering, hypothesis testing, and regression analyses are applied to the speed-flow-occupancy relationship represented in the three-dimensional space to rigorously validate the three phases and identify their gaps. The finding is consistent across the aforementioned different geographical locations. Accordingly , we propose a three-phase macroscopic traffic flow model and a characterization of solutions to the Riemann problems. This work identifies critical structures in the fundamental diagram that are typically ignored in first-and higher-order models, and could significantly impact travel time estimation on highways.
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Dates and versions

hal-01864628 , version 1 (30-08-2018)

Identifiers

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Maria Laura Delle Monache, Karen Chi, Yong Chen, Paola Goatin, Ke Han, et al.. A three-phase fundamental diagram from three-dimensional traffic data. Axioms, 2021, 10 (1), pp.17. ⟨10.3390/axioms10010017⟩. ⟨hal-01864628⟩
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