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SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY Measuring Route-Level Accessibility: Applications to San Francisco Network Jennifer Ziebarth, Neema Nasir,

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Presentation on theme: "SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY Measuring Route-Level Accessibility: Applications to San Francisco Network Jennifer Ziebarth, Neema Nasir,"— Presentation transcript:

1 SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY Measuring Route-Level Accessibility: Applications to San Francisco Network Jennifer Ziebarth, Neema Nasir, Elizabeth Sall, Lisa Zorn TRB Planning Applications Conference May 9, 2013

2 SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY2 Route-level accessibility Many paths One path

3 Creating a bicycle route choice model SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY3 Hood, Sall, Charlton: “A GPS-based bicycle route choice model for San Francisco, California”. Transportation Letters (2011) 3: (63-75).

4 Route-level accessibility from Ferry Building SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY4

5 If we build it … they will run away?? SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY5

6 Routes are correlated with each other SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY6

7 It all comes down to the pathsize correction SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY7 Path utilityPathsize correction BeforeAfterBeforeAfter

8 Valencia paradox SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY8 BeforeAfter

9 Bierlaire and Frejinger SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY9

10 Pathsize Penalty algorithm SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY10 Path 1Path 3Path 2

11 Sensitivity testing, revisited SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY11

12 One path versus many SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY12 1 path5 paths10 paths

13 SAN FRANCISCO COUNTY TRANSPORTATION AUTHORITY Thank you! Special thanks to: Elizabeth Sall, Lisa Zorn, Neema Nassir, Jeff Hood, John Bowman, Dan Tischler, Alireza Khani

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