OpenPATH and Itinerum Integration: A Case Study of Merging Open-Source Projects: Preprint

Jenna Ruzekowicz, K. Shankari, Kyle Fitzsimmons

Research output: Contribution to conferencePaper


Throughout the transportation sector, multiple mobility tracking platforms have been developed independently, in parallel, with similar use cases and infrastructure. Maintaining such platforms on an individual level can result in duplicated effort. Innovation within the field could be slowed by the limited resource of people working on extremely similar projects. We provide a case study in how such platforms can be combined with low effort and provide an example in the mobility domain of what the resulting integration points, modules and ownership may look like. OpenPATH (formerly e-mission) and Itinerum are two examples of similar independently developed human mobility tracking platforms that extend beyond standard traffic data collection. Due to the open source nature of the projects, members from both teams decided to merge the functionality, thereby only hosting a single data collection process and limiting maintenance of separate intake platforms. On the front-end, specific questionnaire functionality from Itinerum, mainly the ability to display and return questions and results focused on sociodemographic attributes, was integrated into the OpenPATH user interface. On the back-end, an export pipeline stage was created to transport collected data back to the Itinerum database. Upon completion, the OpenPATH application retained its original functionality while adding the ability to export data for future data sharing and creating an avenue to incorporate Itinerum hosted questions and answers. Itinerum benefits from the rich feature set and infrastructure of OpenPATH without losing needed elements such as the questionnaire component. This case study, within the transportation sector, illustrates the various configurations in which open source software can be developed, maintained and deployed.
Original languageAmerican English
Number of pages13
StatePublished - 2022
EventTRB - Washington, DC
Duration: 9 Jan 202213 Jan 2022


CityWashington, DC

NREL Publication Number

  • NREL/CP-5400-81549


  • human mobility tracking
  • integration
  • Itinerum
  • open source
  • OpenPATH
  • smartphones
  • transportation


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