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Do you trust me? Driver responses to automated evasive maneuvers
Nicholas Britten1,2, Mishel Johns3,4, Jon Hankey1
1Virginia Tech Transportation Institute, Blacksburg, VA, United States.
Frontiers in Psychology
|June 16, 2023
Summary
Drivers in conditionally automated driving (CAD) systems did not intervene during evasive maneuvers. Most participants trusted the CAD system, intervening only when necessary and safely during testing.
Area of Science:
- Automotive Engineering
- Human-Computer Interaction
- Transportation Safety
Background:
- Conditionally Automated Driving (CAD) systems are increasingly common.
- CAD systems control the vehicle within their operational design domain, requiring evasive maneuvers.
- Driver intervention during these maneuvers poses a potential safety risk.
Purpose of the Study:
- To investigate driver behavior during evasive maneuvers in CAD systems.
- To assess the safety implications of driver intervention during automated emergency braking or steering.
- To understand driver trust in CAD systems during critical events.
Main Methods:
- A Wizard-of-Oz research study involving 36 participants.
- Participants experienced moderate-intensity evasive maneuvers (braking or steering) on a test track.
- Driver reactions and interventions were observed and recorded.
Main Results:
- Participants generally did not intervene during system-initiated evasive maneuvers.
- Drivers observed the obstacle but did not attempt to take control.
- When drivers did intervene, it was performed safely.
Conclusions:
- Brief exposure to CAD systems fosters sufficient driver trust to prevent unnecessary interventions.
- Drivers appear to rely on the CAD system's ability to handle immediate threats.
- Further research is needed to explore long-term trust and intervention strategies in CAD systems.
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