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Open AccessArticle

Public Traffic Congestion Estimation Using an Artificial Neural Network

by 1, 1,2,3,* and 1
1
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
2
Collaborative Innovation Center for Geospatial Information Technology, Wuhan 430079, China
3
Faculty of Geomatics, East China University of Technology, Nanchang 330013, China
*
Author to whom correspondence should be addressed.
ISPRS Int. J. Geo-Inf. 2020, 9(3), 152; https://doi.org/10.3390/ijgi9030152
Received: 20 January 2020 / Revised: 18 February 2020 / Accepted: 7 March 2020 / Published: 8 March 2020
(This article belongs to the Special Issue GIS in Sustainable Transportation)
Alleviating public traffic congestion is an efficient and effective way to improve the travel time reliability and quality of public transport services. The existing public network optimization models usually ignored the essential impact of public traffic congestion on the performance of public transport service. To address this problem, this study proposes a data-based methodology to estimate the traffic congestion of road segments between bus stops (RSBs). The proposed methodology involves two steps: (1) Extracting three traffic indicators of the RSBs from smart card data and bus trajectory data; (2) The self-organizing map (SOM) is used to cluster and effectively recognize traffic patterns embedded in the RSBs. Furthermore, a congestion index for ranking the SOM clusters is developed to determine the congested RSBs. A case study using real-world datasets from a public transport system validates the proposed methodology. Based on the congested RSBs, an exploratory example of public transport network optimization is discussed and evaluated using a genetic algorithm. The clustering results showed that the SOM could suitably reflect the traffic characteristics and estimate traffic congestion of the RSBs. The results obtained in this study are expected to demonstrate the usefulness of the proposed methodology in sustainable public transport improvements. View Full-Text
Keywords: public transport network; congestion estimation; genetic algorithm; big data public transport network; congestion estimation; genetic algorithm; big data
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Gu, Y.; Wang, Y.; Dong, S. Public Traffic Congestion Estimation Using an Artificial Neural Network. ISPRS Int. J. Geo-Inf. 2020, 9, 152.

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