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Delphi survey


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The aim of the SUMP Glossary is to provide a brief explanation of specialist words, terms and abbreviations relating to the subject of sustainable urban mobility planning. The Glossary has been prepared by the CH4LLENGE project and as a result, there is a particular focus on defining terms relating to the four key challenges of plan development studied by the project, namely: participation, cooperation, measure selection and monitoring & evaluation. It is envisaged that, over time, the international community of mobility practitioners will add to the content of the online Glossary and produce versions in different languages.
A simple structure has been followed so that users can search for words, terms and abbreviations in a standard alphabetic format. For each Glossary term, the following information is provided:
• a general definition and, where available, a specific definition relating to transport and mobility planning;
• an explanation of why the term is relevant to sustainable urban mobility planning; and
• references to sources.
The preparation of the Glossary, including the selection of terms and drafting of definitions, has been informed by a review of relevant reports, guidance documents and existing glossaries. The key reference is the European Union “Guidelines - Developing and implementing a Sustainable Urban Mobility Plan” prepared for the EC’s Intelligent Energy Europe (IEE) programme by Rupprecht Consult (January 2014) and therefore this has not been identified as a source throughout the document. The outputs of the CH4LLENGE project have also provided a principal source of information and the official documents can be found at www.sump-challenges.eu.

Please note that not all the explanatory text is taken directly from the listed sources. The authors have sought to take established definitions and information as the basis and explain these in simple terms and relate them to the context of sustainable urban mobility planning where this was not previously the case.

Par Admin Eltis / Mis à jour: 28 May 2019

Definition – The Delphi technique involves a wide range of stakeholders in a survey, usually to build knowledge about a contemporary issue or to support the forecasting of future conditions and developments. Originally developed in the 1950s, the Delphi technique has been widely used across research fields and is accepted as a methodinfo-icon for achieving a convergence of opinion regarding real-world knowledge and for forecasting future changes.

The technique has several distinguishing characteristics:

  • it is an iterative process, consisting of two or more rounds;
  • analysis and feedback occurs at the end of each round, with the outcomes of the analysis informing subsequent rounds;
  • there is a level of anonymity amongst the participants, which facilitates creative thinking outside of institutional norms; and
  • it can give everyone a voice in the process.

A Delphi surveyinfo-icon may be used as a toolinfo-icon for analysis rather than decision-making, aiding the development of potential solutions and helping researchers to identify the roots of consensus or disagreement.

Relevance to SUMP – For SUMP processes, the Delphi survey approach can be used in integrationinfo-icon and participationinfo-icon processes. Web-based Delphi surveys can provide a cost-effective tool during SUMP preparation.

Source: Carter and Sheriff (2011)

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