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http://dx.doi.org/10.14695/KJSOS.2020.23.2.103

The Effects of Driver's Trust in Adaptive Cruise Control and Traffic Density on Workload and Situation Awareness  

Kwon, Soon-Chan (부산대학교 심리학과)
Lee, Jae-Sik (부산대학교 심리학과, 사회과학연구원)
Publication Information
Science of Emotion and Sensibility / v.23, no.2, 2020 , pp. 103-120 More about this Journal
Abstract
Using driving simulation, this study investigated the effects of driver's trust in the adaptive cruise control (ACC) system and road density on driver's workload and situation awareness. The drivers were allocated into one of four experimental conditions manipulated by ACC system trust level (trust-increased vs. trust-decreased) and road congestion (high vs. low). The workload and situational awareness of the participants were measured as dependent variables. The results showed followings. First, trust-decreased group for the ACC system had significantly lower trust scores for the system in all of the measurement items, including reducing the driving load and securing safe driving due to the use of this system, than the trust-increased group. Second, the trust-decreased group showed a slower reaction time in the secondary tasks and higher subjective workload than trust-increased group. Third, in contrast, the situational awareness for the driving situation was significantly higher in the trust-decreased group than trust-increased group. The results of this study showed that the driver's trust in the ACC system can affect the various information processing performed while driving. Also, these results suggest that trust in the user's system should be considered as an important variable in the design of an automated driving assistance system.
Keywords
System Trust; Adaptive Cruise Control; Traffic Density; Situation Awareness; Workload; Driving Simulation;
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Times Cited By KSCI : 3  (Citation Analysis)
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