1. Structural Accessibility Layer SAL Structural Accessibility Layer WU_PT1 Cecília Silva Vitor Oliveira, Ana Amante, Sílvia Sousa WG2 meeting. Edinburgh UK 13 October 2011

2. Structural Accessibility Layer SAL – Structural Accessibility Layer Concepts SAL: – Geographical representation of comparative accessibility levels by types of transport to different types of opportunities Structural Accessibility: – Assess how urban structure constrains travel choices 13 October 2011 WG2 meeting. Edinburgh UK People Access by: different Transport Modes Access to: different Activities

3. Structural Accessibility Layer SAL – Structural Accessibility Layer Method Diversity of activities accessible – Ex: schools, hospitals, shops, services, parks By transport mode: – Non-motorized, public transport and car Comparison between accessibility levels by different transport modes 13 October 2011 WG2 meeting. Edinburgh UK

4. Structural Accessibility Layer SAL – Structural Accessibility Layer Indicators Diversity of Activity Index: – Contour measure type 13 October 2011 WG2 meeting. Edinburgh UK 0 1 Accessibility to all the considered activities None of the activities is accessible fy – ponderation factor regarding frequency of use

5. Structural Accessibility Layer SAL – Structural Accessibility Layer Indicators Accessibility Clusters (comparative measure): – High accessibility levels by particular transport modes – Favourable conditions for the use of those transport modes 13 October 2011 WG2 meeting. Edinburgh UK NM PT CAR I II III IV V VI VII

6. Structural Accessibility Layer SAL – Structural Accessibility Layer Input Data: – Statistical data (at census track) Population Employment Activities by type – Geographical data Transport infrastructure Mobility system service level 13 October 2011 WG2 meeting. Edinburgh UK

7. Structural Accessibility Layer SAL – Structural Accessibility Layer Input Case specific – Study area boundaries – Level of spatial disaggregation – Relevant travel generating activities Use frequency of activities (relative importance in travel) – Cut-off criteria and values (accessibility limits), such as: Time Cost Convenience, etc – Meaning of high accessibility Decision vs Survey 13 October 2011 WG2 meeting. Edinburgh UK

8. Structural Accessibility Layer SAL – Structural Accessibility Layer Output Accessibility levels (from 0-1) of each census track by transport mode Comparative accessibility: – land use and transport conditions enabling or disabling the use of particular modes – How urban structure constraints mode choice 13 October 2011 WG2 meeting. Edinburgh UK

9. Structural Accessibility Layer SAL – Structural Accessibility Layer Output Examples 13 October 2011 WG2 meeting. Edinburgh UK

10. Structural Accessibility Layer SAL – Structural Accessibility Layer Output examples 13 October 2011 WG2 meeting. Edinburgh UK

11. Structural Accessibility Layer SAL – Structural Accessibility Layer Usefulness in practice Interviews with experts – Robustness NMDivAct Clusters – Usefulness as design support tool – Practical applicability – Legend: positive opinion uncertain negative opinion no answer Experts interviewed: 17 (transport, land use, practitioners, researchers) 13 October 2011 WG2 meeting. Edinburgh UK

12. Structural Accessibility Layer SAL Structural Accessibility Layer WU_PT1 Cecília Silva Vitor Oliveira, Ana Amante, Sílvia Sousa WG2 meeting. Edinburgh UK 13 October 2011 Thank you