Study on Reference Models for Hmi in Voice Telematics to Meet Driver’s Mind Distraction

SUMMARY This paper describes a study on the reference models for human machine interaction (interface) (HMI) in a voice telematics services. The goal of the reference models is to reduce the possibilities of drivers' mind distractions even in the cases of hands-free and/or eyes-free driving situations. One of the basic principles is 'Voice telematics services should be controlled so that driving workload plus telematics workload should not exceed driver's ability.' In the first step of the study, the actual driving tests were conducted in which HMI dialogues of the test telematics services were controlled based on emergency and priority considerations. The tests included right-hand turns as the typical situations where the driver's workload increased. As a result of the tests, the necessity of the reference models was confirmed. Now, as the second step, we are drafting the reference models systematically based on the tests.