DfI Roads carries out a comprehensive appraisal of each strategic road improvement proposal. The appraisal procedure requires a clear understanding of the objectives which are to be met, and appropriate criteria to be used, to decide whether a proposal meets them.
Scheme assessment reports act as a summary of the more technical reports generated during the appraisal of road schemes. Scheme assessment and reporting is a three-stage procedure; the level of detail and coverage of the assessment and the report is appropriate to the type of decision that can reasonably be taken at each stage.
Stage 1 identifies the environmental, engineering, economic and traffic advantages, disadvantages and constraints associated with broadly defined improvement stategies. This concludes in the selection of a number of potential routes or options.