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Network Conflation Experience- Lessons Learned (so far)

Network Conflation Experience- Lessons Learned (so far). Jonathan Ehrlich Metropolitan Council. Existing Network. Why Conflate?. Accurate distances Realistic mapping Ability to add data from other sources Error-Checking. Timeline of Conversion. Tier3 Conflation Process.

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Network Conflation Experience- Lessons Learned (so far)

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  1. Network Conflation Experience- Lessons Learned (so far) Jonathan Ehrlich Metropolitan Council

  2. Existing Network

  3. Why Conflate? • Accurate distances • Realistic mapping • Ability to add data from other sources • Error-Checking

  4. Timeline of Conversion

  5. Tier3 Conflation Process • Proof of Concept: • Conflation of Network for 7 Counties • Conflate TAZ Centroids using Control Model • Conflation to NAVTEQ Street Product • Maintain all Demand Network Node Connectivity • Use Core gConflate Technology

  6. Tier3 Process • Proprietary Process • Automated • Relative Offset

  7. Manual Conflation Fixes

  8. Logic Errors

  9. Exposed Coding Bugs!

  10. Find the Error?

  11. Find the Error?

  12. Find the Error?

  13. Find the Error?

  14. Need for More Detail

  15. Need More Refined Coding Conventions

  16. Need More Refined Coding Conventions

  17. Continuing Issues • Software • Speed • Clumsy Tools • Data • Navteq vs TLG • Future “off”-network coding (i.e. HOT) • Transit

  18. Mileage Change

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