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Giovanni Circella is the Honda Distinguished Scholar on New Mobility Studies and the Director of the 3 Revolutions Future Mobility Program at the Institute of Transportation Studies of the University of California, Davis. He is also a Senior Research Engineer in the School of Civil and Environmental Engineering of the Georgia Institute of Technology. Dr. Circella’s research interests include travel behavior, travel demand modeling, travel survey methods, emerging transportation services, autonomous vehicles, shared mobility and policy analysis. His recent research has focused on the impacts of individual attitudes, land use features, information and communication technology (ICT), shared mobility and ridehailing (e.g. Lyft and Uber) on travel behavior and auto ownership, and the mobility patterns of specific population segments (e.g. “millennials”) in various regions of the U.S., Europe, South America and the Middle East. He is the Chair of the TRB Committee on Information Communication Technologies (ICT) and Transportation (ADB20) and serves in several National Cooperative Highway Research Program (NCHRP) panels on the impacts of connected and automated vehicles.
Dr. Circella is the principal investigator for the California Panel Study of Emerging Transportation Trends.

Sessions

  • June 11: Fifty shades of public transport

    The adoption of shared mobility services and its impacts on the use of public transportation and other travel modes

    Preliminary results showed that adoption and frequency of use of ridehailing services approximately between 2015 and 2018. Approximately 15% of respondents reported that their last Uber/Lyft trips were made using shared ridehailing services. About half of both ridehailers and shared-ridehailers would have driven a personal car or carpooled with others if the service was not available. Ridehailing also contributes to attract passengers from taxi services as well as other modes including walking and bicycling and the use of public transportation. Shared ridehailing is found to more often replace for the use of public transportation, also due to the lower costs of these services which makes it increasingly attractive among younger travelers. Shorter trips are found to more often reduce the amount of individuals’ walking and bicycling. More detailed analyses will be presented in the poster.
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