Abstract
Driver assistance systems, also called automated driving systems, allow drivers to immerse themselves in non-driving-related tasks. Unfortunately, drivers may not trust the automated driving system, which prevents either handing over the driving task or fully focusing on the secondary task. We assert that enhancing situational awareness can increase a driver's trust in automation. Situational awareness should increase a driver's trust and lead to better secondary task performance. This study manipulated driversʼ situational awareness by providing them with different types of information: the control condition provided no information to the driver, the low condition provided a status update, while the high condition provided a status update and a suggested course of action. Data collected included measures of trust, trusting behavior, and task performance through surveys, eye-tracking, and heart rate data. Results show that situational awareness both promoted and moderated the impact of trust in the automated vehicle, leading to better secondary task performance. This result was evident in measures of self-reported trust and trusting behavior.
Highlights
Driver assistance systems embedded in autonomous and semi-autonomous vehicles have the potential to increase driving safety while providing human drivers with the flexibility to address other pressing issues that they could not address while manually driving [29].prior research suggests that not all drivers trust automated driving systems [2, 42, 46]
Each of the observations per condition was nested within an individual, violating one of the assumptions of ordinary least squares regarding the independence of observation
This study demonstrated the importance of driver assistance systems in supporting situational awareness (SA) to facilitate trust in automation
Summary
Prior research suggests that not all drivers trust automated driving systems [2, 42, 46] This lack of trust prevents drivers from either handing over driving responsibility or fully focusing on a secondary (i.e., non-driving) task [10]. In the former case, the driver fails to complete the secondary task. We leverage both definitions and define trust in AVs as the willingness of an individual to be vulnerable to the actions of an AV based on the attitude that the AV will help them achieve their goals. Trust in an autonomous vehicle has been identified as a vital determinant of whether the driver will employ an autonomous vehicle [2, 5, 42, 46]
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