• Less eyes on road with increased AD experience • Perceived safety increased and then stabilized with increased AD experience Intro to study, car, equipment Lap 1: Manual driving Lap 2: Manual driving 90 min Ca 6 min/lap Intro to AD and demo Lap 3: AD available Lap 4: AD available Lap 5: AD available Lap 6: AD available Lap 7: AD available Post quest. Interview Manual driving to garage Roadworks Intersection Roadworks Slow moving Roadworks Oncoming Roadworks Intersection Roadworks Overtaking Roadworks Slow moving Roadworks Oncoming #4 Recurrent Measurements of User Experience in AVs Victor Malmsten Lundgren, Jonas Andersson, Emma Asker, Azra Habibovic, Maria Klingegård, David Lindström, Alex Voronov - A Method Development Experiment at AstaZero Proving Grounds Research Instutes of Sweden, RISE Viktoria Background Method Results and conclusions Future work Acknowledgements Funded by SAFER Open Research at AstaZero, Knowledge Founda- on, and Strategic Vehicle Research and Innovaon (FFI). The studies connue in real traffic within the project Trust in Intelligent Cars (TIC). The experiment used quantave and qualitave methods to invesgate behavior over me when experiencing highly automated driving (AD). Research quesons: • How does user behavior differ between two occasions? • What factors indicate a shiſt from first encounter behavior (tense) to more experienced use (calm)? • Two occasions à 90 min for each test parcipant • Within subject design • Highly automated test vehicle (corr. SAE level 4) • 8 test parcipants (4 female, 4 male ) • 80 km on rural road at Asta Zero proving grounds in Sweden Contact: [email protected] • Variaons in driver behavior and first encounter effects were aenuated over me: • 1st occasion: exhilarated (”fun”, ”cool”, ”impressive”) • 2nd occasion: neutral state (”posive”, ”safe”, ”good”, “calm”) • Several factors indicated the shiſt from tense to relaxed, e.g.: perceived safety, glance behavior, me to engage in non-driving tasks • Faster to engage in non-driving tasks with increased AD experience Fig. Data collecon methods and devices Fig. Experiment meline.