Chaotic semi-express buses in a loop

Urban mobility involves many interacting components: buses, cars, commuters, pedestrians, trains, etc., making it a very complex system to study. Even a bus system responsible for delivering commuters from their origins to their destinations in a loop service already exhibits very complicated dynami...

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Main Authors: Saw, Vee-Liem, Vismara, Luca, Chew, Lock Yue
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/153738
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1537382023-02-28T19:57:35Z Chaotic semi-express buses in a loop Saw, Vee-Liem Vismara, Luca Chew, Lock Yue School of Physical and Mathematical Sciences Data Science and Artificial Intelligence Research Centre Complexity Institute Science::Physics Chaotic Dynamics Human Urban mobility involves many interacting components: buses, cars, commuters, pedestrians, trains, etc., making it a very complex system to study. Even a bus system responsible for delivering commuters from their origins to their destinations in a loop service already exhibits very complicated dynamics. Here, we investigate the dynamics of a simplified version of such a bus loop system consisting of two buses serving three bus stops. Specifically, we consider a configuration of one bus operating as a normal bus that picks up passengers from bus stops A and B and then delivers them to bus stop C, while the second bus acts as an express bus that picks up passengers only from bus stop B and then delivers them to bus stop C. The two buses are like asymmetric agents coupled to bus stop B as they interact via picking up passengers from this common bus stop. Intriguingly, this semi-express bus configuration is more efficient and has a lower average waiting time for buses compared to a configuration of two normal buses or a configuration of two express buses. We reckon that the efficiency arises from the chaotic dynamics exhibited in the semi-express system, where the tendency toward anti-bunching is greater than that toward bunching, in contradistinction to the regular bunching behavior of two normal buses or the independent periodic behavior of two non-interacting express buses. Nanyang Technological University Published version This work was supported by the Joint WASP/NTU Program (Project No. M4082189) and the DSAIR@NTU Grant (Project No. M4082418). 2022-01-20T06:51:24Z 2022-01-20T06:51:24Z 2021 Journal Article Saw, V., Vismara, L. & Chew, L. Y. (2021). Chaotic semi-express buses in a loop. Chaos, 31(2), 023122-. https://dx.doi.org/10.1063/5.0039989 1054-1500 https://hdl.handle.net/10356/153738 10.1063/5.0039989 33653069 2-s2.0-85101440466 2 31 023122 en M4082189 M4082418 Chaos © 2021 Author(s). All rights reserved. This paper was published by AIP Publishing in Chaos and is made available with permission of Author(s). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Physics
Chaotic Dynamics
Human
spellingShingle Science::Physics
Chaotic Dynamics
Human
Saw, Vee-Liem
Vismara, Luca
Chew, Lock Yue
Chaotic semi-express buses in a loop
description Urban mobility involves many interacting components: buses, cars, commuters, pedestrians, trains, etc., making it a very complex system to study. Even a bus system responsible for delivering commuters from their origins to their destinations in a loop service already exhibits very complicated dynamics. Here, we investigate the dynamics of a simplified version of such a bus loop system consisting of two buses serving three bus stops. Specifically, we consider a configuration of one bus operating as a normal bus that picks up passengers from bus stops A and B and then delivers them to bus stop C, while the second bus acts as an express bus that picks up passengers only from bus stop B and then delivers them to bus stop C. The two buses are like asymmetric agents coupled to bus stop B as they interact via picking up passengers from this common bus stop. Intriguingly, this semi-express bus configuration is more efficient and has a lower average waiting time for buses compared to a configuration of two normal buses or a configuration of two express buses. We reckon that the efficiency arises from the chaotic dynamics exhibited in the semi-express system, where the tendency toward anti-bunching is greater than that toward bunching, in contradistinction to the regular bunching behavior of two normal buses or the independent periodic behavior of two non-interacting express buses.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Saw, Vee-Liem
Vismara, Luca
Chew, Lock Yue
format Article
author Saw, Vee-Liem
Vismara, Luca
Chew, Lock Yue
author_sort Saw, Vee-Liem
title Chaotic semi-express buses in a loop
title_short Chaotic semi-express buses in a loop
title_full Chaotic semi-express buses in a loop
title_fullStr Chaotic semi-express buses in a loop
title_full_unstemmed Chaotic semi-express buses in a loop
title_sort chaotic semi-express buses in a loop
publishDate 2022
url https://hdl.handle.net/10356/153738
_version_ 1759856170256826368