Effects of Voice Type and Driving Context on User Experience of In-Vehicle Voice Agents in Autonomous Vehicles

Key Points

• This research aims to explore how different voice types and driving contexts influence user experience with in-vehicle voice agents in autonomous vehicles.
• Conducted a 2×2 within-subjects experimental design with 28 participants.
• Measured key user experience indicators such as intimacy, trust, and perceived safety.
• Explored interaction effects between voice type and driving context.
• Human voices elicited higher intimacy and perceived anthropomorphism compared to synthetic voices.
• Perceived safety was rated higher in task-oriented driving contexts.
• An interaction effect was found, where task-oriented contexts preferred synthetic voices, while non-task contexts favored human voices.