Questionnaire results. Scenarios (S) one to twelve are displayed from left to right, respectively. For scenarios 1 and 2, drivers’ trust significantly increased after experiencing the vehicles. Conversely, for scenarios 4, 7, 8, 9, and 12, drivers’ trust significantly decreased after experiencing the vehicles. No significant trust changes between pre- and postmeasurements were found for scenarios 3, 5, 6, and 11. For scenario 10, significant differences were found between the pre- and the “2-week” measurement (i.e., m2), but not between m0 and m1. α = .004. Error bars were calculated based on the standard error of the mean.