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DISTILLATE Product G2. Dr Ann Jopson University of Leeds, 21 st May 2007. Local Scheme Assessment. A decision aid, NOT a decision maker Suitable for assessing local schemes of any size (in terms of cost, and magnitude of impacts) Can run a ‘mini-NATA’ if desired

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distillate product g2

DISTILLATE Product G2

Dr Ann Jopson

University of Leeds, 21st May 2007

local scheme assessment
Local Scheme Assessment
  • A decision aid, NOT a decision maker
  • Suitable for assessing local schemes of any size (in terms of cost, and magnitude of impacts)
    • Can run a ‘mini-NATA’ if desired
  • Will help to prioritise schemes contributing to an objective, or set of objectives
    • Can also compare projects contributing to different objectives
  • Excel assessment matrix
    • Indicators represent national, regional and local objectives
    • Authorities can pick and mix from our set, and/or add their own
    • Authorities weight indicators, then assess impact of project(s) using Likert scales
    • Weight and scale combined to give prioritisation
indicators
Indicators
  • Starting point: DISTILLATE C
  • Other sources
    • Government policy:
      • NATA
      • LTP guidance
      • Best value performance indicators (BVPI)
        • Offers guidance on local indicators
      • Accessibility
    • ITS projects looking at journey quality, indicators and modelling indicators
  • Indicators need to be disaggregated
    • E.g., Greenhouse gases, local air pollution, noise, green space… not just the environment
weighting and impact assessment
Weighting and impact assessment
  • Weight indicators according to local priorities
    • LTP likely to be a starting point
  • Weight each indicator on a scale of 0 – 5
    • 0 being irrelevant
  • Assess impact of scheme on scale of…?
    • 1 to 4 (no mid point forces a –ve/+ve decision, neutral isn’t an option)
    • 1 to 5
    • 1 to 7
    • 1 being minimal impact
    • 0 weighted indicators should not be assessed
  • Multiply weight by impact assessment to obtain value
    • Low value: project may not be worthwhile?
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