Abstract
In recent years, careless driving by fall asleep is frequently because of poor concentration and loosening tension in car driving. In this study, the support of the awareness level maintenance to a driver was applied into a vehicle interior, and then audiovisual information with the effective visual stimuli and auditory stimuli for the application was studied. First, it was observed that the effective stimulus obtained by the past study shows a similar trend in awareness level maintained simply in the environment simulating the vehicle interior. Next, the effectiveness of the awareness level maintenance was compared with different ages to examine the generality. Further, the effect of the complex stimuli was verified for the purpose of application to the vehicle compartment space.