Abstract
In view of an upcoming highly automated driving, we have developed a method for maintaining driver's alertness, which does not cause discomfort and is highly acceptable. Repetitive visual stimuli synchronized with a vehicle that appears on a passing lane are presented for naturally inducing saccadic eye movements. The result of a driving simulator experiment which simulated an automated driving on an expressway showed that the proposed method could extend an alertness period of time from 20 minutes to 41 minutes.
