Simulation-based origin destination matrix reduction: a case study of Helsinki city area
summary
Workflow reduces a 2,000-zone OD matrix to a ~400-zone Helsinki core by running one extended SUMO simulation, recording vehicle trajectories and border edges, and building a core OD that includes in/out and through trips; reduced simulations run in ~20 minutes versus ~6 hours for the extended run. An edge-based OD assignment preserves border flow patterns while keeping randomness. Validation with DigiTraffic shows average MAPE 34% against observed counts; border stations see ~10% lower error.
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chapters (8)
- 0:00Intro
- 0:39MOTIVATION AND BACKGROUND
- 5:44PROBLEM FORMULATION
- 8:31PROPOSED WORKFLOW
- 10:08EDGE ASSIGNMENT ALGORITHM
- 10:44IMPLEMENTATION
- 11:37EXPERIMENTAL STUDY
- 16:42CONCLUSION
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