CityLines: A Hybrid Hub-and-Spoke System for Urban Transit Services

February 6, 2017 - 11:15am to 12:15pm
Worcester Polytechnic Institute, MA
Keller 3-125
Mohamed Mokbel
Abstract: Rapid urbanization has posed significant burden on urban transportation infrastructures. Conventional public transits operate along fixed routes with limited coverage area and low passenger quality of experience (QoE) in terms of wait time and total transit time. Private transits such as taxi, private shuttle and ride-hailing services provide point-to-point transit with high trip fare. In this talk, I present a hybrid hub-&-spoke transit system for urban transportation, which leverages both point-to-point and hub-and-spoke transit modes, with the goal of minimizing the average travel time per trip. The proposed CityLines system requires less routes than private transits, thus improves the efficiency of utilizing urban transportation resources and increase the occupation rate; and it requires less stops/transfers than existing public transits to save on trip time. Various practical design challenges of CityLines system will be discussed: scalability (enabling real-time transit service planning for urban scale trip demands), dynamicity (allowing hub relocation and route re-planning to cope with the trip demand dynamics), reliability (to traffic disruptions), and compatibility (providing inter-transit coordination with other transit services).

Biography: Yanhua Li is an Assistant Professor with Computer Science Department and Data Science Program at Worcester Polytechnic Institute (WPI). Before joining WPI, Dr. Li worked as a Post-Doctoral Researcher in Computer Science and Engineering Department at University of Minnesota, Twin Cities, and worked as a researcher in HUAWEI Noah's Ark LAB at Hong Kong. He obtained two PhD degrees in computer science and electrical engineering from University of Minnesota, Twin Cities in 2013, and Beijing University of Posts and Telecommunications in 2009. His broad research interests are in smart cities, data-driven cyber-physical systems (CPS), urban science. Dr. Li has held visiting positions in Bell Labs in New Jersey, Microsoft Research Asia, and HUAWEI research labs of America. Dr. Li is a recipient of NSF CISE Research Initiation Initiative (CRII) Award.