1. The Mid-Ohio Regional Planning Commission The 11th TRB National Transportation Planning Applications Conference May 9, 2007 1

2.  City of Columbus  Maricopa Association of Governments (MAG)  Central Ohio Transit Authority 2

3.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 3

4.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 4

5.  Identify major pedestrian network  Recognize pedestrian travel needs  Promote pedestrian activities 5

6.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 6

7.  “Gravity-based” Model  Non-linked vs. Linked  Latent Demand Score (LDS): 0~100% Relative levels of potential pedestrian travel demand among a given network 7

8. Both ends of walk trips Attraction Production 8 P PPP P PPP A A

9. 9 Distance matters Source: MAG Pedestrian 2000-Technical Appendix, Dec 1999

10. P PPP P PPP Spatial queries Buffer 10 A A

11. 11  Attractor-base queries  Segment-based queries

12. 12  Attractor-base queries  Segment-based queries

13.  Non-linked trips: entire trip made by foot ◦ Work (college/University) ◦ Shopping and Errands ◦ School ◦ Recreational  Linked trips: partial trip made by foot (most of the trip made by auto/other motorized modes) 13

14.  LDS - normalization 0 ~ 100% ◦ Non-linked ◦ Linked  Combine non-linked and linked trips “Composite” LDS=MAX(non-linked LDS, Linked LDS) 14

15.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 15

16.  Grid System vs. TAZ  Impact of Transit Service  Additional Pedestrian “Attractors” 16

17.  Regional Connections 17 TAZGrid

18.  MAG linked pedestrian trips Linked LDS = E/A E=total employment within the buffer A=total area within the buffer  Attraction (employment) end vs. production (residence) end  Auto vs. Transit 18

19.  Revised linked pedestrian trips Linked LDS = (P  b%+E)/A P=total population within the buffer b%=transit share of trips by the population E=total employment within the buffer A=total area within the buffer 19

20.  Transit Share – b% ◦ Mode split information at Block Group (BG) level from Census 2000 SF3 data ◦ Mode split information at Grid level? ◦ Transit Service Frequency by Route at Grid level from Central Ohio Transit Authority (COTA)  Stops in the Grid  Headways 20

21.  Transit Share – b% (cont’d) b%=M%  (f / F) M%= max. BG transit share within the entire region considered. f= transit service frequency within Grid/its buffer. F=max. transit service frequency within Grid/its buffer. 21

22.  Government buildings, sport arena, museum, libraries, theaters, etc.  Four Categories ◦ Service area (local vs. regional) ◦ Service type (general vs. special) 22

23. Service Area LocalRegional Service Type GeneralLibraryMuseum SpecialBMVFairground 23 Four Categories

24. 24 Weight Score Service Area LocalRegional Service Type General32 Special21

25.  Example of weighting factor ◦ Library and Fairground in the buffer of a segment with LDS = 80% Weight score = 3+1=4 Weighting factor = 1.04 (multiplicative) New LDS = 80%  1.04= 83.2% 25

26.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 26

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31.  Columbus Pedestrian Thoroughfare Plan  Review of MAG Latent Demand Model  MORPC’s Modification  Results  Conclusions 31

32.  Understanding pedestrian travel demand  Evaluating existing sidewalk system (ongoing)  Prioritizing pedestrian facility improvements in a consistent way  Future work: refine methodologies and update the results periodically 32

33.  Ahmad Al-Akhras alakhras@morpc.orgalakhras@morpc.org  Chris Gawronski cgawronski@morpc.orgcgawronski@morpc.org  Anthony Hull ahull@morpc.orgahull@morpc.org  Zhuojun Jiang zjiang@morpc.orgzjiang@morpc.org 33

34. 34 Questions ? Please use the Microphone.