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Matching GTFS Transit Route Data to a Roadway Network for Travel Modeling

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2015 D-STOP Symposium session by the Network Modeling Center's Ken Perrine. Watch the presentation at http://youtu.be/sSotvhKg3Wc?t=47m44s

Get symposium details: http://ctr.utexas.edu/research/d-stop/education/annual-symposium/

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Matching GTFS Transit Route Data to a Roadway Network for Travel Modeling

  1. 1. COLLABORATE. INNOVATE. EDUCATE. Matching GTFS Transit Route Data to a Roadway Network for Travel Modeling Kenneth A. Perrine Research Associate Monday, March 2, 2015
  2. 2. COLLABORATE. INNOVATE. EDUCATE. Google Maps
  3. 3. COLLABORATE. INNOVATE. EDUCATE. Google Maps GTFS Shape * * * * * *
  4. 4. COLLABORATE. INNOVATE. EDUCATE. ? ? ? Roads? ? ? ? ?? ? ? * * * * * *
  5. 5. COLLABORATE. INNOVATE. EDUCATE. Google Maps
  6. 6. COLLABORATE. INNOVATE. EDUCATE. Google Maps
  7. 7. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * * *
  8. 8. COLLABORATE. INNOVATE. EDUCATE. * * * * * * Google Maps
  9. 9. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * * * * * * *
  10. 10. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * * * ** * *
  11. 11. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * *
  12. 12. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * * *
  13. 13. COLLABORATE. INNOVATE. EDUCATE. * * * * * *
  14. 14. COLLABORATE. INNOVATE. EDUCATE. Google Maps * * * * * * !?
  15. 15. COLLABORATE. INNOVATE. EDUCATE. Google Maps
  16. 16. COLLABORATE. INNOVATE. EDUCATE. * * * * * * *Google Maps
  17. 17. COLLABORATE. INNOVATE. EDUCATE. * ** * *Google Maps
  18. 18. COLLABORATE. INNOVATE. EDUCATE. * * * * * * * * * * Google Maps *
  19. 19. COLLABORATE. INNOVATE. EDUCATE. * * * * * * Global & local Multiple hypotheses Topological Heuristic-free
  20. 20. COLLABORATE. INNOVATE. EDUCATE. GTFS shapes Initial match Simulator files Underlying topology Fix underlying topology Problem report Workflow Refine matches Problem report Good enough? Y N
  21. 21. COLLABORATE. INNOVATE. EDUCATE. OpenStreetMap • 123,046 nodes • 300,199 links NMC CAMPO DTA • 11,393 nodes • 13,353 links Austin Region Google Maps
  22. 22. COLLABORATE. INNOVATE. EDUCATE. CapMetro GTFS • 84 routes • 170 shapes • 45,476 points • 1,383 miles • 2 in - 3472 ft apart (avg. 161 ft) GPS 1-sec • 22 routes • 44 journeys • 44,298 points • 283 miles • 0 to 114 ft apart (avg. 34 ft) * * * * * *
  23. 23. COLLABORATE. INNOVATE. EDUCATE. GPS 1-sec over NMC CAMPO DTA • Discontinuities: 0 • Accuracy: 100% CapMetro GTFS over NMC CAMPO DTA • Discontinuities: 0 • Accuracy: 95.9%* • (Had to fix 80 links!) CapMetro GTFS over OpenStreetMap • Discontinuities: 0 • Accuracy: 99.8%* • (Had to fix 1 link!) RESULTS * In hand-checked cases, 3,068 of 45,476 GTFS points FUTURE Link curvature Compute speed * * * * * *
  24. 24. COLLABORATE. INNOVATE. EDUCATE. Open source! http://ctr.utexas.edu/nmc/nmc-map-matcher Kenneth Perrine kperrine@utexas.edu

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