08 JUN 2022 (WED) | 13:00-14:00 HKT

A Method to Match Users Across Transportation Modes Based on Repeated Transfer Behaviors

REGISTRATION: https://bit.ly/3uyVv5d (Deadline: 07 June 2022, 12:00)

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This seminar will be via ZOOM only.

SPEAKER:

Dr Hongtai Yang Associate Professor, Southwest Jiaotong University

DATE & TIME:

June 08 (Wednesday) 13:00-14:00 HKT

ABSTRACT:

For the purpose of privacy protection, trip trajectory data containing rich personal travel information needs to be anonymized before being shared and analyzed. This practice makes it difficult for researchers to identify the same individuals in different datasets, which hinders the construction of complete trip chains and the exploration of important travel patterns. Therefore, this paper develops a method to match users of different transportation modes based on the following idea. If a user makes a transfer, the ending point of the previous trip will be around the same time (a little earlier) and same location as the starting point of the next trip. When this pattern happens for two user accounts repeatedly, we can infer that the two users are actually the same person. This method is demonstrated using the metro and bus data of Chengdu city from January to March 2021. When setting the minimum transfer times as three, the precision and recall of user matching is 56.50% and 26.45% for the one-month data, 61.76% and 38.60% for the two-month data, and 65.36% and 50.49% for the three-month data. Sensitivity analysis is performed to study the effect of parameters on the user matching result.

ABOUT THE SPEAKER:

Hongtai Yang is an associate professor of Southwest Jiaotong University, located in Chengdu, China. He obtained his PhD in civil engineering with emphasis on transportation engineering and MS in statistics from The University of Tennessee at Knoxville. His research interests include urban big data analytics and multimodal transportation demand management. He has served as PI for research projects from various funding sources such as National Science Foundation of China and China Postdoctoral Science Foundation. He serves as an academic editor of Journal of Advanced Transportation and an editorial board member of China Safety Science Journal. He has published more than 40 papers on journals such as Transportation Research Part A/D/F and IEEE Transaction on Intelligent Transportation Systems, and five of them have been selected as ESI highly cited papers.

ORGANIZER:

Institute of Transport Studies, The University of Hong Kong

29 MAR 2022 (TUE), 19:00 – 20:00 HKT

Viable Electric Vehicle Charging Facility Planning Models for Asian Cities with High Population Density

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Registration link: https://www.institute-of-transport-studies.hku.hk/event-details/dtls20220329/form

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Email to hkits@hku.hk

Confirmation emails with ZOOM link will be sent to participants.

SPEAKER:

Professor Qiang Meng

Department of Civil and Environmental Engineering

National University of Singapore

DATE & TIME: 29 March 2022 (Tuesday), 19:00 – 20:00 (Hong Kong Time)

ORGANISED BY:

Institute of Transport Studies, The University of Hong Kong

HOSTS:

Professor Becky P.Y. Loo (Director) and Professor W.Y. Szeto (Deputy Director), The University of Hong Kong

ABSTRACT:

As a clean transportation means, the electric vehicle (EV) has received increasing interest from different stakeholders. However, it is a challenge for an Asian city with high population density such as Singapore and Hong Kong to well plan the EV charging infrastructure due to the dense and tall residential buildings, limited driving range of EVs, and taxi services. Therefore, it is imperative to develop variable EV charging facility planning models for the Asian dense cities.

In this study, a four-step model is developed to deploy normal and fast-charging stations that can satisfy the charging demand of private EVs, 1-shift, and 2-shift electric taxis. To further consider charging service for electric taxis, a fast-charging facility planning model is formulated based on the taxi trajectory data subject to EV battery degradation and vehicle heterogeneity in driving range. A case study in Singapore is thoroughly conducted, and insightful policy implications are revealed: policy-makers could use the proposed methodology to significantly save investment and reduce total waiting time for charging; overlooking battery degradation and vehicle heterogeneity will yield a biased electric taxi charging facility planning.

ABOUT THE SPEAKER:

Prof. Qiang Meng is a Prof. in the Department of Civil and Environmental Engineering (CEE) at the National University of Singapore (NUS), the co-director of LTA-NUS Transportation Centre, and the director of the Centre for Transportation Research of CEE. His research mainly focuses on urban mobility modeling and optimization, shipping and intermodal freight transportation analysis, and quantitative risk assessment of transport operations. He has published more than 230 journal articles with total citations of 13,579 and an H-index of 68 in Google Scholar.

Prof. Meng is now the Co-Editor-in-Chief of Transportation Research Part E and Multimodal Transportation (a new transportation journal launched by the Southeast University of China and Elsevier), and Associate Editor of Transportation Research Part B.

Prof. Meng has clinched many research awards and prizes, including the best paper award for institutional innovation in the 14th EASTS International Conference in 2021, 2020 TSL (Transportation Science & Logistics Society of INFORMS) Best Paper Award in Freight Transportation and Logistics, OCDI Takeuchi Yoshio Best Paper Award in the Field of Logistics in the 13th EASTS International Conference in 2019, Engineer Research Award of Faculty of Engineering at NUS in 2018, Chang Jiang Scholars Chair Professorship awarded by the Ministry of Education of PR China in 2017, Dean’s Chair in Faculty of Engineering at NUS in 2015, and the 13th World Conference on Transportation Research Society Prize for the best paper in 2013.

ABOUT THE INSTITUTE OF TRANSPORT STUDIES AT THE UNIVERSITY OF HONG KONG:

The Institute of Transport Studies, HKU was established in 2003. It is a university centre that seeks to identify research programmes as mission-oriented activities and not by traditional academic disciplines alone. As an exemplary interdisciplinary research group, the Institute is having 29 Institute Fellows, all being academic staff at the Professional level, from the Faculty of Architecture, Faculty of Business and Economics, Faculty of Engineering, Faculty of Law, Faculty of Social Sciences, and Li Ka Shing Faculty of Medicine. Apart from hosting the Distinguished Transport Lecture series, international workshops and other seminars, the Institute has co-organized the International Conference on Smart Mobility and Logistics in Future Cities with the Chartered Institute of Transport and Logistics in Hong Kong and the Transport Department of the Hong Kong Special Administrative Region.

06 DEC 2021 (MON) | 13:00-14:00pm HK time (16:00-17:00pm Melbourne time)

Placemaking Sandbox for Transport Practitioners

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This seminar will be via ZOOM only.

SPEAKER:

Dr Iderlina Mateo-Babiano Senior Lecturer in Urban Planning, Melbourne School of Design, University of Melbourne

DATE & TIME:

December 6 (Monday) 13:00-14:00pm HK time (16:00-17:00pm Melbourne time)

ABSTRACT:

Cities are changing very rapidly. Vibrant public spaces make for inclusive, engaging and resilient cities. Strategies and methods traditionally implemented to better manage public spaces, including our public transport environments, may no longer be appropriate to address these unpredictable transformations. In this presentation, I will introduce the Placemaking Sandbox program as a way of fostering a greater understanding of “placemaking” within and outside of transport environments --- the walking, waiting and riding environments --- and the benefit of providing a “sandbox” environment to design and test council-supported, community-led initiatives before and as they are implemented in our cities and communities.

ABOUT THE SPEAKER:

Iderlina Mateo-Babiano, PhD, is Senior Lecturer in Urban Planning at the University of Melbourne. She is also Assistant Dean, Diversity and Inclusion. An architect, urban planner and transport planner by training, she teaches Urban Design and Place Making for The Built Environment. Her research is concerned with improving our understanding of how people interact with place, creating unique challenges and opportunities for positive place-based change. She has also advanced a significant body of knowledge in streets as places, active transport, gender and transport, with theory and policy implications within the Australasian setting.

HOST:

Professor Becky P.Y. Loo, Director, Institute of Transport Studies

ORGANIZER:

Institute of Transport Studies, The University of Hong Kong

REGISTRATION:

Registration link: https://www.institute-of-transport-studies.hku.hk/event-details/itsseminar20211206/form

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Email to hkits@hku.hk