Evaluating informative auditory and tactile cues for in-vehicle information systems

Abstract

As in-vehicle information systems are increasingly able to obtain and deliver information, driver distraction becomes a larger concern. In this paper we propose that informative interruption cues (IIC) can be an effective means to support drivers' attention management. As a first step, we investigated the design and presentation modality of IIC that conveyed not only the arrival but also the priority level of a message. Both sound and vibration cues were created for four different priority levels and tested in 5 task conditions that simulated possible perceptional and cognitive load in real driving situations. Results showed that the cues were quickly learned, reliably detected, and quickly and accurately identified. Vibration was found to be a promising alternative for sound to deliver IIC, as vibration cues were identified more accurately and interfered less with driving. Sound cues also had advantages in terms of shorter response time and more (reported) physical comfort.

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