Department For Transport
October 19
09:00
2023
Details
A toolkit that provides practical information on:
- the analysis of uncertainty in modelling and appraisal
- techniques for exploring that uncertainty in the context of future travel demand
- how to present this data to decision-makers
- the common analytical scenarios, including narratives and how to apply them proportionately in transport business cases
It supplements TAG Unit M4: forecasting and uncertainty.
A common analytical scenarios databook has also been published.
The previous version of this guidance was released in December 2022.
TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions to support a business case.