The Optima project is not dead! This project took place between 2009 and 2012 and involved 3 labs (CEAT, LASUR, TRANSP-OR). PostBus, a Swiss bus company, wanted to understand mode choice in rural and suburban areas. In particular, a revealed preference survey was conducted in 2009/10. More details:
- about the project: TRACE website, including media coverage,
- about the revealed preference survey: a technical report.
A new paper using this dataset has been published:
An information we get from this survey si how flexible car is perceived. Respondents are asked how much they agree with the sentence "With my car I go whenever and wherever". This paper shows that these three people:
- monthly income: 5000 CHF
- thinks that car is very flexible
- monthly income: 7000 CHF
- thinks that car is somehow flexible
- monthly income: 9000 CHF
- thinks that car is not particulary flexible, but doesn't disagree (neutral)
all have the same value of time, i.e., they would all be ready to pay the same amount of money, say 8 francs, to save 10 minutes of their time spent traveling.
It means that thinking car is more flexible (on a scale with 5 possibilities, totally agree, partially agree, neutral, partially disagree, totally disagree) is equivalent to 2000 CHF more in monthly income when it comes to how much you are willing to pay to save time.
From a different point of view, if you - with your given income - think that car is more flexible, you will be ready to pay more to save time.
For the methodology and detailed results, check the paper.