The purpose of this paper is to analyze the primary utility of travel (PUT) after data from the French National Travel Survey (FNTS) 2007-2008, to know how 'primary' actual trips are, or more exactly to what extent they yield each of three types of utility : utility of reaching a destination, utility of activities performed during the trip, and utility of the trip itself. For that, a twelve-fold typology of trips is created (PUT type). The paper provides one dimension statistics of all PUT questions in the FNTS, as well as the split of all trips by PUT type. Cross tabulations of PUT type by different PUT questions, age-gender groups, trip purpose and travel mode are also described. Finally, a generalized logistic model is estimated to explain the trip split by PUT type with respect to a number of explanatory variables at the household level, at the individual level, at the trip level. Many variables have a significant effect on the probability that a trip is of any of the twelve considered PUT types.
