車載用HMIデバイスの評価手法の研究-静止時および運転時のデバイス操作性分析-

概要

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Since there are many different types of user and context, evaluating usability and safety of devices and interfaces used while performing tasks like driving is challenging. Can rated usability of a device in single-task use (core usability) predict safety and performance in multi-tasking contexts, at least as a first approximation? The experiment reported below examined this issue by evaluating three different HMI (human-machine interaction) devices for in-car systems. Thirty-one people performed a menu-selection task with the three devices. Device usability was assessed both with and without an accompanying simulated driving task. The reflected device was clearly worse than the other two (haptic and touchscreen) with respect to its usability in a single task setting, and the reflector interface was also found to be more distracting while driving. This result was confirmed in the driving context by a number of different measures including usability, safety, eye gaze, and steering. In addition, direction of eye gaze and steering stability were found to be useful and unobtrusive measure for evaluating the usability and safety of the HMI. It is concluded that single-task ratings of (core) usability may be useful predictors of the safety and efficiency of HMI devices in vehicles for some contexts.
一般社団法人情報処理学会の論文
2009-11-05