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.
Menu
An Evaluation of Regression Analysis and the Gravity Model in the Phoenix Urban Area
- C.R. brady M.J. Betz
- September 1971
- Vol. 5
- No. 1
- Page 76
An Evaluation of Regression Analysis and the Gravity Model in the Phoenix Urban Area
- C.R. brady M.J. Betz
- September 1971
- Vol. 5
- No. 1
- Page 76
Regression equations for generation were developed and gravity models calibrated on 1957 data. The 1964 zone-to-zone traffic demand was then 'forecast' for a larger area, actual data being used for the independent variables. The results give ground for confidence in the reliability of this method of forecasting future urban travel.
Share Content
Facebook
Twitter
LinkedIn
Related Articles
View Journal »
A Model for trips Generated by Households
This article examines methods of predicting numbers of trips made by car and by public transport, and shows how closely the model is influenced by the size and composition of the household and by its income.
The Case for a Public Road Authority
The paper argues for a public Road Authority owning the highway infrastructure and holding debt. Present provisions for private roads lead to large distortions, and are unlikely to encourage private investment.
