The Evolution of London's Crossrail Scheme and the Development of the Department for Transport's Economic Appraisal Methods

Abstract

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Wider Economic Impacts in Transport Infrastructure Cost-Benefit Analysis – A Bridge Too Far?

“…With regard to productivity effects of agglomeration, the points made by SGS (2012a) appear to confirm the critique offered by DfT (2014);Worsley (2011);Laird and Mackie (2010);, among others. For example, 'rather than firms being more productive because they are in a central location, firms that are more productive can command central locations', so that the direction of causality runs in the opposite direction to the one usually hypothesised.…”

“…A selection of publications in the UK and elsewhere includes DfT (2005); Venables (2007); Vickerman (2007aVickerman ( , 2007b; Elhorst and Oosterhaven (2008); Mare and Graham (2009) ;Laird and Mackie (2010); Worsley (2011); Abelson (2011);Hensher et al (2012); SGS Economics andPlanning (2012a, 2012b); DfT (2014);and Byett et al (2015). 3 Initially referred to as 'wider economic benefits' (for example, DfT 2005), some of the literature has since adopted the more appropriate term 'wider economic impacts', in recognition of the fact that many of the posited impacts relate to changes in GDP and employment levels, rather than to the social welfare measures used in CBA.…”

Expanding Airport Capacity under Constraints in Large Urban Areas: Summary and Conclusions of the Roundtable held on 21-22 February 2013

“…In one case -London's Crossrail -these three considerations together added broadly 50% to the estimated economic benefits of the project. Although this is very probably an exceptional (but important) example, it is interesting to note that the recognition of the existence of agglomeration economies in this case has helped the introduction of an additional tax -of broadly equivalent value -on businesses in the CBD (see Worsley (2011) for a discussion). However, not all of these three considerations will be of direct relevance to airport investment (not, for example, the labour supply aspects).…”

Social cost-benefit analysis in Australia and New Zealand. The state of current practice and what needs to be done

“…Detailed critiques are provided by DfT (2014); Worsley (2011);Laird and Mackie (2010); Graham et al (2009) and Byett et al (2015), among others.…”

“…Department for Transport, 2014;Laird & Mackie, 2010;Worsley, 2011;Abelson, 2011). This recognition is based on the lack of definitive evidence in posited WEBs of the direction of causality (e.g.…”