Analysis of heterogeneous vehicular traffic: Using proportional densities

Josephine Nanyondo and Henry Kasumba

Physica A: Statistical Mechanics and its Applications, 2024, vol. 633, issue C

Abstract: This paper presents a multi-class Aw–Rascle (AR) model with area occupancy expressed in terms of vehicle class proportions. Two vehicle classes that is; cars and motorcycles are considered based on an assumption that proportions of these form total traffic density. Qualitative properties of the proposed equilibrium velocity are established. Conditions under which the proposed model is stable are determined by linear stability analysis. To compute numerical flux, the model is decomposed by original Roe decomposition, where Roe matrix, averaged data variables and wave strengths are explicitly derived. The Roe matrix is shown to be hyperbolic, consistent and conservative. From the numerical results, the effect of proportional densities on the flow of vehicle classes is determined. Results obtained remain within limits therefore, the proposed model is realistic.

Keywords: Multi-class; Roe decomposition; Heterogeneous traffic; Area occupancy; Aw–Rascle model (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:633:y:2024:i:c:s0378437123009421

DOI: 10.1016/j.physa.2023.129387

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