Results are reported of a study designed to identify the cognitive constructs underlying the valuation of park-and-ride (P&R) facilities and to measure the relative importance attached to the attributes of such facilities. Results show that the reliability of public transport is quite important. Furthermore, time and, to a lesser degree, costs considerably influence a traveler's decision to use P&R or not. Parking aspects are less important, except for information about parking. Finally, respondents evaluated the attributes about staying at P&R facilities to be least important. These results do, however, seem to vary between user groups.