Transport Analysis Guidance (TAG) on the appraisal of rail interventions.
This document gives guidance on the appraisal of rail interventions.
This Transport Analysis Guidance (TAG) unit was updated in December 2015 to clarify the 3 sources of potential indirect tax impacts in rail appraisals, from changes in (a) fare revenues / expenditure; (b) car use as a result of mode shift; and (c) rail diesel use; and that (a) — the impact from changes in car use — should be calculated as part of the ‘marginal external cost’ method.
The previous version of this unit was TAG unit A5-3 rail appraisal, November 2014.
WebTAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions and business cases.