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SHRP C10B

SHRP C10B. Partnership to Develop an Integrated Advanced Travel Demand Model with Fine-Grained, Time-Sensitive Networks. 14th TRB National Transportation Planning Applications Conference. May 5, 2013. Thomas Rossi Michalis Xyntarakis. SHRP C10B Team. Cambridge Systematics, Inc.

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SHRP C10B

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  1. SHRP C10B Partnership to Develop an Integrated Advanced Travel Demand Model with Fine-Grained, Time-Sensitive Networks 14th TRB National Transportation Planning Applications Conference May 5, 2013 Thomas RossiMichalis Xyntarakis

  2. SHRP C10B Team • Cambridge Systematics, Inc. • Sacramento Area Council of Governments • University of Arizona • University of Illinois, Chicago • Sonoma Technology, Inc. • Fehr and Peers

  3. Integrated Modeling Approach

  4. SHRP C10B • Integration of SACSIM with DynusT • Implemented in Sacramento, California • Uses original DaySimmodel estimated in Sacramento • Incorporates new transit simulation process (FAST-TrIPS) • Integration with MOVES • Testing using policy alternatives in Sacramento

  5. Model Features • Integrated model components • DaySim(tours/trips) DynusT/FAST-TrIPS(auto/transit simulation) • Exogenous trips DynusT (auto simulation) • DynusT MOVES • User interface • Enables users to create, run, manage scenarios • Run times for Rancho Cordova subarea network (about 20% of regional trips) reasonable –tests for regional model show promising run times

  6. MOVES IntegrationMain components • DynusT processing to prepare network and activity data for MOVES • MOVES input files set-up using other data sources • MOVES CO2 emissions modeling • Running exhaust (related to roadway links) • Start exhaust (related to traffic analysis zones)

  7. Other Model Features • DaySim revised to incorporate variable value of time (for road pricing analysis) • Travel time reliability incorporated into DynusT • Feedback process for using travel times from DynusT as inputs to SACSIM • Conversion of shared ride person tours to vehicle tours

  8. Policies/Projects Being Tested • Scenarios compared between the original SACSIM model and the new C10B integrated model • Operations-Oriented Interchange Project • New Transit Line • Freeway Bottleneck Analysis • Scenarios tested using only the new C10B integrated model • ITS/Arterial Signal Coordination • Transit Schedule Coverage Change • HOT Lane project

  9. Policy Testing – Performance Metrics • Team is determining how performance metrics will be produced • Different measures will require different tools: • SACSIM (lane miles, service hours, etc.) • DaySim (trips by mode/purpose, VMT/VHT/PMT/PHT) • DynuStudio (for DynusT outputs)

  10. ABM and DTA Integration

  11. Comparison of Static And Dynamic Skim Times

  12. Comparison of Static and Dynamic Skim Times (2)

  13. DTA Convergence Relative Gap = 1%

  14. DTA: Convergence Relative Gap = 20%

  15. Noise in a DTA simulation: Skim differences between iteration 20 and 21

  16. How long should we run DTA? Skim differences between iteration 10 and 20

  17. Project Status – Final Tasks Underway • Policy/project testing • Documentation • Finalization of integrated model and software

  18. SHRP C10B Web Portal

  19. For Further Information… • Thomas Rossi, Cambridge Systematics • trossi@camsys.com • http://www.shrp2c10.org/SHRPC10Portal/Home.aspx • www.dynust.net

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