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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 Dr Ann Jopson University of Leeds, 21st 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 • 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 • 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 • 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?