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The source code and documentation for the SmarTrAC application from the University of Minnesota has been released onto the OSADP and is now available for download. To download these applications, you need to sign in as a registered user. To download the SmarTrAC software, please click here. If you do not have an account, you may submit an account registration request by completing the registration form.

SmarTrAC is an open-source Android smartphone application which addresses the limitations of both the passive sensing and traditional travel survey tools. SmarTrAC has two major functionalities:

  1. Automatically detect, identify, and summarize attributes of daily activity and travel; specifically:
    1. Processes raw sensor data from devices such as global positioning system (GPS) and accelerometers using rules derived from statistical and machine learning techniques
    2. Segments and partitions time series into periods where activity or travel mode remained constant, and
    3. Summarizes attributes of the segmented activity and travel modes based upon sensor data into categories such as waiting, walking, biking, transit, driving, etc.
  2. Allow users to view and provide contextual information on the identified periods of activity or travel at their convenience on a daily basis, thereby enabling the collection of more detailed contextual data.

The SmarTrAC application provides users with detailed information on their daily activity and creates a full, accurate picture of the travel modes utilized in a given area. Additionally, the data collected can be used in further add-on applications that provide more information or services to a potential user.

SmarTrAC is compatible with Android devices running Android 4.1 or higher. The download package does not include an installer. In addition, if users want to use the database upload function of this application, they need to initiate their own cloud storage service and update the code to point to their own storage. Finally, in order to use Google Maps, the developers need to have their own Google map automatic program interface (API) keys. Google Maps has detailed developer instructions for it at https://developers.google.com/maps/documentation/android-api/start?hl=en

This application was developed under contract with the Volpe Center at the United States Department of Transportation (USDOT) in support of the Intelligent Transportation Systems Joint Program Office. The research was developed on the basis of an earlier pilot study that was funded by the Center for Transportation Studies at the University of Minnesota. More information on this effort is available at http://smartrac.umn.edu/.

Documentation related to this research, including the Final Report, can be found at: http://www.cts.umn.edu/Research/ProjectDetail.html?id=2015029