Emerging Mobility Systems and Services

A weekly online seminar on emerging topics of new mobility systems and services

Every Thursday 10 a.m. EST. on Zoom.

morning (North America); afternoon (Europe); evening (Asia)

Upcoming speaker:

Hai Yang

Chair Professor, Civil and Environmental Engineering

Hong Kong University of Science and Technology (HKUST)

Title: Some Emerging Research Issues in Ride-sourcing Markets

When: 10 a.m. EST. (UTC-5), Thursday, July 16th, 2020

Where: zoom (link will be sent after registration)

Abstract: Urban mobility has undergone drastic changes in recent years with the introduction of application-based taxi and car service e-hailing systems. These systems provide timely and convenient on-demand ride services to anyone, anywhere and anytime. E-hailing is now prevalent in the traditional taxi industry by effectively mitigating information asymmetry and uncertainty between customers and taxi drivers; E-hailing in the form of ride-sourcing can efficiently match a requesting customer with an affiliated private car driver nearby for on-demand ride services. This talk highlights some emerging research issues and latest developments in ride-sourcing markets, including demand forecasting; surge-pricing; matching, pricing and ride-pooling, joint optimization of matching time interval and matching radius; customers’ maximum willingness to wait with sunk waiting time; optimal resource allocation with bundled options of choice; impact of ride-pooling on traffic congestion; competition and third-party platform-integration; Pareto-efficient market regulations; and analysis of human mobility and network property with big car trajectory data, etc.

Short bios: Prof. Hai Yang is currently a Chair Professor at The Hong Kong University of Science and Technology. He is internationally known as an active scholar in the field of transportation, with more than 250 papers published in SCI/SSCI indexed journals and a SCI H-index citation rate of 59. Most of his publications appeared in leading international journals, such as Transportation Research, Transportation Science and Operations Research. Prof. Yang received a number of national and international awards, including Frank M. Masters Transportation Engineering Award, American Society of Civil Engineers (2020); National Natural Science Award bestowed by the State Council of PR China (2011). He was appointed as Chang Jiang Chair Professor of the Ministry of Education of PR China; Prof. Yang served as the Editor-in-Chief of Transportation Research Part B: Methodological from 2013 to 2018 and is now a distinguished editorial board member of this prestigious journal.

Confirmed speakers:


Hani Mahmassani

Professor, Civil and Environmental Engineering

William A. Patterson Distinguished Chair in Transportation

Northwestern University

Chandra R. Bhat

Joe J. King Chair in Engineering, Civil, Architectural and Environmental Engineering

Director, US DOT Center D-STOP

University of Texas at Austin

Yafeng Yin

Professor, Civil and Environmental Engineering

University of Michigan

Samitha Samaranayake

Assistant Professor, Civil and Environmental Engineering

Cornell University

Peter I. Frazier

Associate Professor, Operations Research and Information Engineering

Staff Data Scientist, Uber

Cornell University

Martin Savelsbergh

James C. Edenfield Chair Professor,  H. Milton Stewart School of Industrial and Systems Engineering

Co-Director Supply Chain & Logistics Institute

Georgia Institute of Technology

Previous presentations

Nikolas Geroliminis

Associate Professor, Institute of Transportation Studies

Ecole polytechnique fédérale de Lausanne (EPFL)

Title: On the new era of traffic management for large urban networks – Recent advances in MFD research

Video recording: Youtube; Bilibili

Abstract: Human mobility in congested city centers is a complex dynamical system with high density of population, many transport modes to compete for limited available space and many operators that try to efficiently manage different parts of this system. New emerging modes of transportation, such as ride-hailing and on-demand services, and new technologies, such as autonomous vehicles, create additional opportunities, but also more complexity. The new era of sharing information and ‘big data world’ has raised our expectation to make mobility more predictable and controllable through a better utilization of existing resources and capacity. The primary motivation of this talk is to study the spatiotemporal relation of congested links in large networks, develop new advancements in the Macroscopic Fundamental Diagram (MFD), observe congestion propagation from a macroscopic perspective, identify the effect of multimodal interactions in network capacity and finally design network-level control strategies to improve multimodal mobility. Investigating the clustering problem over time help us reveal the hidden information during the process of congestion formation and dissolution. In this framework, we will be able to chase where congestion originates and how traffic management systems affect its formation and the time it finishes. Different control strategies are developed based on principles of optimization and control theory.

Kara Kockelman

Dewitt Greer Centennial Professor of Transportation Engineering, Civil, Architectural and Environmental Engineering

University of Texas at Austin

Title: Shifting toward Shared Fleets and Shared Rides, via Autonomous Vehicles and Congestion Pricing

Video recording: Youtube; Bilibili

Abstract: Connected and (fully-) automated vehicles (CAVs) are set to disrupt the ways in which we travel, and result in more motorized trips and longer trips. Shared AVs (SAVs) will offer many people access to such technologies at relatively low cost (e.g., $1 per mile), with empty-vehicle travel on the order of 10 to 15 percent of fleet VMT. If SAVs are smaller and/or electric, and dynamic ride-sharing is enabled and regularly used, emissions and energy demand may fall. If road tolls are thoughtfully applied, using GPS-based systems along all congested network segments, total VMT may not rise: instead, travel times – and their unreliability – may fall. If credit-based congestion pricing is used, traveler welfare can rise and transportation systems may operate near-optimally. This presentation will present research relating to all these topics, including the benefits of SAV stop aggregation.

Kay W. Axhausen

Professor, Civil, Environmental and Geomatic Engineering

ETH Zürich

Title: Micromobility in Switzerland: Demand and competition

Video recording: Youtube; Bilibili

Abstract: Based on detailed data for micromobility systems in Switzerland this talk will present two analysis: 1. Demand estimation for two cities and their comparison. It will highlight that current models explain each city, but are difficult to transfer. 2. Based on 5 different firms’ data the second paper will offer the first analysis of the competition between such services known to us. We highlight the impacts of prices, saturation of supply and of the terrain.

Meet best researchers in

Emerging Mobility Systems and Services

“Innovations in transportation have brought us ride-hail service, autonomous vehicles, bike share, carpooling, scooters, and more. New technologies are fundamentally changing the way residents and visitors get around.” 


Online seminar etiquette:

  1. To ask the speaker a question, please type in the Q&A function in Zoom. The moderator will collect questions and ask the questions after the talk.
  2. Please subscribe to our mail list to get the updates of seminars.

Seminar organizing committee


Qi Luo

Postdoc Associate, Cornell University
Assistant Professor, Clemson University (2021)


Wei Ma

Assistant Professor,
Hong Kong Polytechnic University


Neda Masoud

Assistant Professor,
University of Michigan


Xiaotong Sun

Postdoc Associate,
University of Michigan


Zhengtian Xu

Assistant Professor,
George Washington University

Participating institutes:
Media partners: