Tiramisu: Information from Live Data Streams

The primary source of information for rider safety with respect to dynamic events such as cancelled buses, detours, traffic conditions and other factors is the transit system website. Although technological enhancements, such as real-time tracking, rider alert rich site summary (RSS) feeds, and Twitter feeds, are available for transit users, such information sources do not always report updates reliably. For example, some real- time tracking systems stop transmitting updates about a bus if the bus takes a detour from its scheduled route. Rider alerts might temporarily suspend updates due to holidays or employee paid time off (PTO). Notifications through social media frequently offer information of relevance, but are often difficult to understand, or for one to comprehend the impact of the message on their trip. Paradoxically, users are still faced with a lot of effort at navigating the appropriate information sources, finding and understanding messages and updates of relevance to their trip. The project team's goal is to access transit service live update data feeds, identify the routes and stops on which their updates will have an impact, and provide an integrated display of that information in the user’s Tiramisu smart phone app. The extracted information can be used in multiple ways to improve the interactive experience of the user and keep them better informed. For example, if bus stops will be discontinued between certain hours of a day for, say, water main repair, and other stops will be established during that period, a search of nearby stops will reflect such temporary changes. This, combined with vehicle fullness data from the Tiramisu system, will allow riders to identify alternate transit trip options that are not too full to board.


    • English


    • Status: Completed
    • Sponsor Organizations:

      Carnegie Mellon University

      Pittsburgh, PA  United States 

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590
    • Project Managers:

      Ehrlichman, Courtney

    • Principal Investigators:

      Tomasic, Anthony

    • Start Date: 20160101
    • Expected Completion Date: 0
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01595871
    • Record Type: Research project
    • Source Agency: Technologies for Safe and Efficient Transportation University Transportation Center
    • Files: UTC, RiP
    • Created Date: Apr 8 2016 2:36PM