This paper describes a driving simulator experiment in which an Intelligenr Cruise Control (ICC) was combined with short-range communication (SRC) with the road side. This offers the possibility to obtain in-car preview information about relevant conditions on the road ahead. ICCs studied varied in the way this information was used: informative (leaving it to the driver whether to adjust his speed) or intervening (i.e., making the ICC automatically obey the speed limit). Also the way in which the information was presented to drivers was varied (visual, acoustic, or haptic feedback). Subjects were corifronted with a number of critical scenarios.