In 2001, for the 15th time since 1972, a survey with regard to the travel behavior of the Swiss population was conducted. For the first time, the survey was conducted in 4 waves with a total of 1,968 households. Travel Market Switzerland 2001 is still the broadest database with regard to private trips and excursions by the Swiss population. This report gives an overview on method/ procedure of data collection results. Additionally, a list of all currently available variables gives an impression of data potential with regard to research questions and media coverage. A first descriptive analysis - presented in chapter 2 of this report - has shown, that - With regard to travel propensities, a high level stabilization can be observed; - There is an indication of a trend termination with regard to the shorteing of trips; - Switzerland remains the favourite destination, even with market shares continously declining; - Summer season is loosening to spring and fall; - Visiting friens and relatives is among the stongest drivers of travel; - Cars and planes still dominate more than ever; - The hotel industry is reclaiming market shares at cost of the parahotel sector; - After 9-11, not the means of transportation (air) was avoided, but the trip itself.