Measuring User Trust in an in-Vehicle Information System: A Comparison of Two Subjective Questionnaires

Abstract

Trust is a very important factor in user experience studies. It determines whether users are willing to use a particular application and provides information about the users’ mental model of the system and its limitations. Therefore, trust is widely discussed in the literature, and a variety of instruments have been developed to measure trust. We selected two recent questionnaires for use in a study of an in-vehicle information system. Drivers were asked to use an advanced driver assistance system and rate the level of trust they experienced using both questionnaires. The analysis of the responses to the two questionnaires showed similar results. Thus, these questionnaires seem to be suitable for studies related to driving scenarios and the evaluation of assistance systems.