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TRANSP Seminar: Candace Brakewood, Assistant Professor Big Data Approaches to Understanding the Intersection of Bikesharing and Public Transit

Date: Thursday, October 12

Time: 3:40 pm - 4:55 pm

Location: 327 John D. Tickle Building


Shared mobility systems, such as bikesharing, are rapidly growing in major metropolitan areas. However, it is unclear how these new shared modes impact existing public transit systems. This research takes a first step toward understanding the interactions of bikesharing and public transit systems. The results of two studies that utilize big data sources will be presented. The first study aims to quantify the impact that bikesharing had on bus ridership in New York City. The phased implementation of bikesharing to different areas of New York City created a natural experiment, which is exploited by dividing bus routes into control and treatment groups based on if they are located in areas that received bikesharing infrastructure or not. Daily bikeshare and bus ridership data are utilized in a difference-in-difference modeling framework. The second study focuses on a smartphone app known as “Transit” that is used to unlock bikeshare bicycles in numerous cities. Data from the Transit app are utilized in a two-part analysis. First, an aggregate analysis of user behavior in Chicago, Chattanooga, and Columbus is conducted. In the second analysis, one month of Transit app data are used to identify bikeshare usage patterns for individual users in Chicago. The results of these two studies are important steps toward understanding how bikesharing and public transit systems are interrelated.


Candace Brakewood joined the Civil and Environmental Engineering faculty at UTK in August 2017 after serving on the faculty at the City College of New York for the past three years. She holds a PhD in Civil Engineering from Georgia Tech, dual MS degrees from MIT in Transportation and Technology Policy, and a BS in Mechanical Engineering from Johns Hopkins.


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