Design issues for before and after surveys of travel behaviour change

'Before and after' surveys are a common method of measuring the effect of specific policies and projects designed to cause changes in travel behaviour. The purpose of this paper is to consider some issues involved in the design of before and after surveys required for the evaluation of projects designed to change travel behaviour. The paper covers the following topics: 1.what data are to be collected?; 2. what type of survey will be used?; 3. from whom is the data to be collected?; 4. over what period is the data to be collected?; 5. what length of time should be allowed between the before and the after survey?; 6. how many after surveys should be performed?; 7. what magnitude of difference is to be detected in the before and after surveys?; 8. what is the inherent variability of the parameters to be measured?; 9. what levels of confidence are required in the results?; 10. how should changes in the background environment be handled? The paper concludes with implications for sample design and sample size for projects such as the TravelSMART travel behaviour change program in Victoria. (a)

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  • Authors:
    • HARBUTT, P L
  • Publication Date: 2004


  • English

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  • Accession Number: 01011385
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 3:07PM