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.
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.
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.
A literature review suggests that increases in real fuel prices would lead to a short run reduction in both traffic and consumption, due to more careful driving and differential responses for different journeys. In the longer run the effects would be increased. It is suggested that non-dynamic estimation methods are biased, and that transport prices have wider effects, and are a more important lever of transport policy, than has sometimes been assumed.