In-Vehicle Activity Changes by Automated Driving - Emphasizing Value of Time of Activity -

Abstract

In recent years, the practical application of automated driving systems has been increasing in Japan. One benefit of automated driving systems is that they enable people to engage freely in activities while moving. However, accumulation of studies based on individuals' intentions is necessary because the intentions and subjective values of activities conducted while moving remain unknown. This study was conducted to examine automated driving effects in terms of the value of the activity. First, an original questionnaire survey was administered to ascertain the relation between individual attributes and intentions for in-vehicle activities after automated driving. Then, using the subjective activity time value of individuals, we calculated the value of travel time activity (VTTA) before and after the introduction of automated driving. Results revealed that the increase in VTTA nationwide is greater than the current value of time lost to congestion, and particularly, that the increase in non-work activity time during travel creates value.