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박정철(Jungchul Park) 대한인간공학회 2017 大韓人間工學會誌 Vol.36 No.6
Objective: The aim of this study is to review the existing studies on the user interface of advanced driver assistance systems (ADAS), especially focusing on the transitions of control authority. It also suggests some implications for the interface design. Background: With the advent of autonomous driving and the increasing adoption of ADAS, the importance of ergonomic design for the driver interface of ADAS is increasingly emphasized. Method: In this study, recent studies on the ADAS interface were reviewed in three aspects (the effect of automation level, the display design/evaluation, and control design/evaluation). Existing models of the allocation of control authority between driver and vehicle were also examined. Results: Various results have been obtained due to differences in experimental conditions and environments. However, in general, as the level of automation by ADAS increases, the workload decreases, while the level of situation awareness decreases and the response time increases. Motivations for the control authority transition and implications for the interface design are discussed. Conclusion: The interface that effectively monitors and presents the performance and conditions of the driver and the system is expected to provide assistance in various situations of authority transition. Application: The results of this study might help to explore, understand, and refine related research topics.
차내 정보 시스템의 시각적 요구 평가를 위한 사용자 주도의 시각 차폐 기법
박정철(Jungchul Park) 대한인간공학회 2009 大韓人間工學會誌 Vol.28 No.3
Visual occlusion method is a visual demand measuring technique which uses periodic vision/occlusion cycle to simulate driving environment. It became one of the most popular techniques for the evaluation of in-vehicle interfaces due to its robustness and cost-effectiveness. However, it has a limitation in that the vision/occlusion cycle forces the user to use the IVIS at a predetermined pace, while a driver decides when to use the device on his/her own in actual driving. This paper proposes a user-driven visual occlusion method for measuring the visual demand of in-vehicle interfaces. An experiment was conducted to examine the visual demand of an in-vehicle interface prototype using both the existing (system-driven) occlusion method and the proposed (user-driven) one. Two in-vehicle tasks were evaluated: address input and radio tuning. The results showed that, for the radio tuning task, there were significant differences in total shutter open time and resumability ratio between the methods. The user-driven visual occlusion method not only allows a better representation of drivers' behavior, but it also seems to provide more information on the chunkability of a task.