Realism and Adaptation in Designing Hypothetical travel Choice Concepts
For external validity, SP experiments need to present choices that are realistic for the respondents. The use of portable computers in interviewing has many advantages.
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“Generalised Cost” or “Generalised Time”. A Note on the Forecasting Implications
- H.F. Gunn
- January 1983
- Vol. 17
- No. 1
- Page 91
“Generalised Cost” or “Generalised Time”. A Note on the Forecasting Implications
- H.F. Gunn
- January 1983
- Vol. 17
- No. 1
- Page 91
The conventional use of a weighted sum of travel times and costs to characterise the "separation" of two zones leads to ambiguity in forecasting; but it is difficult to know what adjustment to make.
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