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found that the decisions made by
Ministers in respect of the road schemes were statistically significant in terms of how they related to the information about the schemes included on the ASTs. This demonstrated that Ministers were taking account of the information provided on the ASTs in a consistent
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A further development of NATA has been its use of an approach that disaggregates impacts between all those who are affected by a proposal, rather than the traditional cost–benefit approach of simply assessing the net impacts on society. While the two approaches are equivalent at the aggregate level,
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On 30 October 2007, the DfT published a consultation document – The NATA Refresh: Reviewing the New
Approach to Appraisal – alongside, and as part of, its new transport strategy document 'Towards a sustainable transport system: Supporting economic growth in a low carbon economy'. The aim of the NATA
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Within the NATA framework, the impacts of transport projects are categorised in terms of five high level criteria (economy, safety, environment, accessibility and integration), reflecting the
Government's objectives for transport. Each of these criteria are divided into a number of sub-criteria and
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practice in the UK for many years. NATA was designed to build on that good practice by bringing together the mass of detailed appraisal information about the impacts of a transport proposal, some of which are expressed in monetary terms, some using quantitative measures or some just in qualitative
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has issued its own transport appraisal guidance, 'Scot-TAG' (Scottish
Transport Appraisal Guidance), which draws heavily on NATA. In Summer 2006 the Welsh Assembly Government consulted on the development of its NATA-based transport appraisal guidance, WelTAG, and published its guidance in June
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the NATA approach allows a more detailed analysis to be made of those who gain and those who lose as a result of a proposal. However the NATA approach raises issues regarding the precise definition of the impacts that are included in the numerator and denominator of the
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as part of the 1998 Integrated
Transport White Paper and first used in the 1998 review of trunk road schemes. Its development reflected the new Labour Government's aim of providing a more balanced approach to transport appraisals, in terms of both:
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projects and local authority road schemes and to other modes of transport, including the major programme of Multi-Modal
Studies, initiated by the Government, that were carried out between 1999 and 2003,
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Environment (Noise, Local Air
Quality, Greenhouse Gases, Landscape, Townscape, Heritage of Historic Resources, Biodiversity, Water Environment, Physical Fitness, Journey Ambience)
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Economy (Public
Accounts, Transport Economic Efficiency: Business Users & Transport Providers, Transport Economic Efficiency: Consumers, Reliability, Wider Economic Impacts)
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A UK Government Multi-Criteria
Analysis (MCA) manual, originally produced by the former Department for Transport, Local Government and the Regions and now overseen by the
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In April 2011 the
Coalition Government decided that the term NATA would no longer be used. However, the principles and key elements of the NATA framework remain in the
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As well as setting out methods for appraising transport proposals, WebTAG contains values that should be used to assess different types of impacts, including the
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Accompanying documents to that review list the ASTs for 68 trunk road schemes and provided initial guidance on how NATA was to be applied to transport projects.
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The NATA framework is now a cornerstone of UK transport appraisal practice. It has been applied to other types of road proposals, including small
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it is against each of these sub-criteria that the impacts of a proposal are assessed and presented in a 1 page Appraisal Summary Table (AST).
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major public transport schemes, as well as rail proposals. In 2003, a web based set of Transport Analysis Guidance (commonly referred to as
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and a series of Economic Evaluation Notes prepared for Bank staff in 2005 drew heavily on many elements within the NATA framework.
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terms. A key aspect of NATA is the use of standard worksheets to collate the large amount of cost–benefit analysis and
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Nellthorp, J.; Mackie, P.J, J (2000). "The UK Roads Review – a hedonic model of decision making".
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The methods for assessing the value for money of transport projects have been at the forefront of
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transport projects and proposals in the United Kingdom. NATA was built on the well established
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509:. Institute of Transport Studies, University of Leeds and IT Transport Ltd 2003. 23 May 2018.
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416:"'A New Deal for Trunk Roads in England: Understanding the new approach to appraisal"
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434:"'A New Deal for Trunk Roads in England: Guidance on the new approach to appraisal"
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Refresh consultation document is to seek views on how NATA should be developed.
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Integration (Transport Interchange, Land-Use Policy, Other Government Policies)
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Framework for assessing transport projects and proposals in the United Kingdom
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data and then present it in a more concise, consistent and balanced way.
507:"'Toolkit for the Economic Evaluation of World Bank Transport Projects'"
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Accessibility (Option values, Severance, Access to the Transport System)
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WelTAG – Welsh Assembly Government's transport appraisal guidance
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For those transport matters that are the responsibilities of the
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A transport project evaluation toolkit prepared in 2003 for the
391:"The new approach to the appraisal of road projects in England"
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493:"'The NATA Refresh: Reviewing the New Approach to Appraisal'"
153:(DMRB)) for assessing transport projects and proposals.
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the economic impacts compared to environmental impacts.
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The appraisal procedure used by the Roads Service in
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Department for Transport, Environment and the Regions
49:. Unsourced material may be challenged and removed.
553:Northern Ireland Roads Service appraisal procedure
543:Scot-TAG – Transport Scotland's appraisal guidance
227:The division of the five criteria is shown below:
362:"'A New Deal for Transport: better for everyone'"
190:A subsequent published study by academics at the
270:) based on NATA principles, was launched by the
459:(2). Elsevier Science Ltd., Pergamon: 127–138.
294:Department for Communities and Local Government
521:"'TRN-5 to TRN-26: Economic Evaluation Notes'"
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477:: CS1 maint: multiple names: authors list (
145:techniques (such as those contained in the
593:Environmental impact in the United Kingdom
538:WebTAG – DfT's Transport Analysis Guidance
398:Journal of Transport Economics and Policy
376:"'A New Deal for Trunk Roads in England'"
109:Learn how and when to remove this message
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160:'s Transport Analysis Guidance (TAG).
568:Transport policy in the United Kingdom
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332:is based on the five NATA criteria.
300:Scotland, Wales and Northern Ireland
47:adding citations to reliable sources
578:Multiple-criteria decision analysis
330:Department for Regional Development
151:Design Manual for Roads and Bridges
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131:multi-criteria decision framework
168:NATA was introduced by the then
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588:Environmental impact assessment
218:environmental impact assessment
192:Institute for Transport Studies
143:environmental impact assessment
34:needs additional citations for
404:. University of Bath: 221–226.
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465:10.1016/S0967-070X(00)00002-0
289:and vehicle operating costs.
234:Safety (Accidents, Security)
180:versus public transport; and
436:. DETR 1998. Archived from
418:. DETR 1998. Archived from
58:"New Approach to Appraisal"
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129:) was the name given to a
314:Northern Ireland Assembly
310:Welsh Assembly Government
123:New Approach to Appraisal
272:Department for Transport
158:Department for Transport
139:cost–benefit analysis
264:Local Transport Plan
43:improve this article
573:Transport economics
196:University of Leeds
523:. World Bank 2005.
318:Transport Scotland
306:Scottish Executive
280:Benefit-Cost Ratio
583:Welfare economics
440:on 24 March 2007.
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389:Price, A (1999).
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495:. DfT 2007.
248:Application
562:Categories
348:References
342:World Bank
336:World Bank
69:newspapers
135:appraise
133:used to
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164:History
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