Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions

In the present paper, we derive and solve the space-fractional traffic flow model which is considered as a generalization of the transport density equation. Based on the fundamental physical principles on finite-length highway where the number of vehicles is conserved, without entrances or exits, we...

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Main Authors: Rfaat Moner Soliby, Siti Suhana Jamaian
Format: Article
Language:English
Published: MDPI AG 2022-11-01
Series:Smart Cities
Subjects:
Online Access:https://www.mdpi.com/2624-6511/5/4/84
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author Rfaat Moner Soliby
Siti Suhana Jamaian
author_facet Rfaat Moner Soliby
Siti Suhana Jamaian
author_sort Rfaat Moner Soliby
collection DOAJ
description In the present paper, we derive and solve the space-fractional traffic flow model which is considered as a generalization of the transport density equation. Based on the fundamental physical principles on finite-length highway where the number of vehicles is conserved, without entrances or exits, we construct a fractional continuity equation. As a limitation of the classical calculus, the continuity equation is constructed based on truncating after the first order of Taylor expansion, which means that the change in the number of vehicles is linear over the finite-length highway. However, in fractional calculus, we prove that nonlinear flow is a result of truncating the fractional Taylor polynomial after the second term with zero error. Therefore, the new fractional traffic flow model is free from being linear, and the space now is described by the fractional powers of coordinates, provided with a single variable measure. Further, some exact solutions of the fractional model are generated by the method of characteristics. Remarkably, these solutions have significant physical implications to help to make the proper decisions for constructing traffic signals in a smart city.
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spelling doaj.art-89f44a71dc66412f94d859594dc64dab2023-11-24T18:01:12ZengMDPI AGSmart Cities2624-65112022-11-01541655166910.3390/smartcities5040084Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with SolutionsRfaat Moner Soliby0Siti Suhana Jamaian1Department of Mathematics and Statistics, Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Educational Hub, Muar 84600, Johor, MalaysiaDepartment of Mathematics and Statistics, Faculty of Applied Sciences and Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Educational Hub, Muar 84600, Johor, MalaysiaIn the present paper, we derive and solve the space-fractional traffic flow model which is considered as a generalization of the transport density equation. Based on the fundamental physical principles on finite-length highway where the number of vehicles is conserved, without entrances or exits, we construct a fractional continuity equation. As a limitation of the classical calculus, the continuity equation is constructed based on truncating after the first order of Taylor expansion, which means that the change in the number of vehicles is linear over the finite-length highway. However, in fractional calculus, we prove that nonlinear flow is a result of truncating the fractional Taylor polynomial after the second term with zero error. Therefore, the new fractional traffic flow model is free from being linear, and the space now is described by the fractional powers of coordinates, provided with a single variable measure. Further, some exact solutions of the fractional model are generated by the method of characteristics. Remarkably, these solutions have significant physical implications to help to make the proper decisions for constructing traffic signals in a smart city.https://www.mdpi.com/2624-6511/5/4/84continuity equationLWR modelfractional derivativetraffic flow
spellingShingle Rfaat Moner Soliby
Siti Suhana Jamaian
Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
Smart Cities
continuity equation
LWR model
fractional derivative
traffic flow
title Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
title_full Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
title_fullStr Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
title_full_unstemmed Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
title_short Non-Linearity Flux of Fractional Transport Density Equation in Traffic Flow with Solutions
title_sort non linearity flux of fractional transport density equation in traffic flow with solutions
topic continuity equation
LWR model
fractional derivative
traffic flow
url https://www.mdpi.com/2624-6511/5/4/84
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