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NRA Transportation Surveys

NRA Transportation Surveys. Derek Brady & Nigel O’Neill, July 2011. NRA a ctivities generating Transportation Surveys. Roads Projects National Roads Traffic Management Study National Secondary Roads Needs Study . NRA Project Appraisal Guidelines (PAG). NRA National Traffic Model

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NRA Transportation Surveys

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  1. NRA Transportation Surveys Derek Brady & Nigel O’Neill, July 2011

  2. NRA activities generating Transportation Surveys • Roads Projects • National Roads Traffic Management Study • National Secondary Roads Needs Study. • NRA Project Appraisal Guidelines (PAG). • NRA National Traffic Model • NRA Automatic Traffic Counter Network

  3. Local Authority Transportation Surveys for National Road Schemes • O/D & Count Surveys are carried out for Local Authorities who are the client for almost all road schemes on National Roads • Collection, storage and quality control of survey information is with individual Local Authorities • Probably will not be significant volumes of survey information acquired through this means in the near future. • PAG (incorporating DoT’s CAF 2009) Appraisal deliverables are the “transportation interface” between L.A.s and NRA. This includes Transportation Modelling Reports, CBA & Business Case material.

  4. Dunkettle Junction Improvement • NRA is Contracting Authority • Initial intention to collect February 2011 origin destination data by Road Side Interview (RSI) • An Garda Síochánaunable to facilitate roadside surveys • Revised survey approach: postcards were handed out to drivers stopped at signalised junctions • Low number of survey samples returned

  5. NRA Transportation Study Surveys • NRA NTM. Collected significant volume of RSI, Count data, Journey Time info in 2006/2007. • NSRNS. Collected further Count data/Journey Time data to validate NTM for Study in 2009. Also utilised 2005 GPS data to establish Journey Times. • NRTMS. Collected counts/speeds/reg.-plate matching to develop M50 and radial models for traffic management.

  6. Cycling Surveys 2010 • Original motivation: Need to appraise cycling and walking facilities proposed as general improvement to National Secondary Roads • Wanted to predict demand based upon simple household characteristics (from An Post’s GEODirectory) and not rely on an estimate of incremental change on existing demand. • For CBA, alongside health and absenteeism benefits, needed to quantify the users’ perception of reduced danger – journey ambience. • Survey data was collected from three different locations (Greystones, Passage West & Tullamore). A questionnaire was used to carry out both household surveys and intercept surveys on the walking and cycling facilities themselves.

  7. NRA Traffic Count Infrastructure • Ownership and Management of ATC infrastructure with the NRA • Tender competition currently underway for significant upgrading and expansion of ATC network. • NRA ATC data has been posted on NRA website for almost 10 years and will continue to be made available publicly.

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