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JOURNEY TIME MODELLING

Peter Cranny – Dublin Transportation Office O’Callaghan Alexander Hotel 25th June 2009. JOURNEY TIME MODELLING. In the GDA. Modelling the effects of transport strategies on journey time. Transport Strategy for the Greater Dublin Area 2010 – 2030.

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JOURNEY TIME MODELLING

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  1. Peter Cranny – Dublin Transportation Office O’Callaghan Alexander Hotel 25th June 2009 JOURNEY TIME MODELLING In the GDA Modelling the effects of transport strategies on journey time

  2. Transport Strategy for the Greater Dublin Area 2010 – 2030 The Dublin Transportation Office (dto) is required to maintain an up-to-date transport strategy for the GDA, which is to be reviewed and updated at least once in every five years. The new Transport Strategy, which is the successor to A Platform for Change, is currently being developed. It is the aim of the DTO to have both the new Strategy and subsequent implementation adopted by Government in 2010

  3. Consultation for The Transport Strategy 2010 – 2030 STAKEHOLDERS The DTO assembled a list of stakeholders that were then formed into three consultative panels: Strategic Stakeholders: Business and community members (i.e. non-DTO agencies and Secretaries General of Government Departments); Oireachtas Panel: Members of DailEireann and SeanadEireann based in the GDA; Regional Planning Authorities Panel: Members of the GDA regional planning authorities. PUBLIC CONSULTATION WEBSITE

  4. Vision & Objectives of the Strategy 2010 – 2030 VISION “a competitive, vibrant, city-region of inclusive and engaged communities, proud of its heritage and its national and European roles, looking to the future, where an improved quality of life for all is guided by the principle of sustainability” OBJECTIVES

  5. Public Consultation

  6. Journey Time modelling

  7. accession Works best with TranXchangeor ATCO.cif format PT schedule dataVery useful at LocalAuthority levelVery useful for looking at current situationsCheck accessibility to foodshops, Libraries, etc. by public transport, walking, cycling& drivingUsed extensively in preparingLocal Area Plans in UK*commissioned by DFT UK GIS for Journey Time Modelling

  8. GIS used in the dto strategy for analysing journey time Uses unweighted journey timederived from the generalised cost of travel from a TRIPSModel in a CUBE environment.More useful at Regional (GDA)LevelUseful for comparing Base Yearwith Strategy Scenarios ofnew PT services/Changes inLand Use/Roads/Permeability GIS for Journey Time Modelling

  9. Components of the dto journey time tool GIS APPLICATION CORE DATA • Road network topology with added walking only routes • Bus stop (generalised) and rail stop locations – known as PT nodes • Journey times to destinations from PT nodes • Population at 250 m centres derived from…. • CSO population data at DED level • Geodirectory

  10. Core data • Road network topology with added walking only routes 23 mins PT Time • PT access nodes with travel Time values to destination 14 mins PT Time 18.7 mins PT Time • Origins (incidents) generated at 50m intervals on the footpath network • Journey time modelling application finds the least cost path to destination for each origin Core Data for Journey Time Modelling

  11. idw interpolation to create journey time polygons • IDW Interpolation to grid • Add population centroids • Spatial query – Select by location. (This is the 21 – 30 minute timeband) • Summarise to get population count Interpolation and adding population data • Journey time modelling application finds the least cost path to destination for each origin

  12. % Population of GDA within 30 & 60 mins

  13. SwordsLiffey ValleyTallaghtStephen’s GreenDundrumDun LaoghaireBray Average Journey Time to 7 destinations

  14. Conclusion Using the journey time data with other spatial data In the 2010 strategy Employment POWCAR (place of work – CSO 2006) Social Deprivation Education PT networks & capacity Congestion County Development Plans Regional Planning GuidelinesSEA related datasets Employment centres Peter Cranny - Dublin Transportation Office Compass 09 O’Callaghan Alexander Hotel 25th June 2009

  15. I? Peter Cranny - Dublin Transportation Office Compass 09 O’Callaghan Alexander Hotel 25th June 2009

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