Abstract
This study specifically examines the operation of “Shared-adus”, shared mobility with automated driving vehicles. Shared-adus vehicles use vacant trips to go to passengers, which might increase their environmental footprint. We analyze lengths of vacant trip time using a variety of operations and service levels. Additionally, we ascertain the relationship between the environmental footprint and area characteristics. Main results are presented below. 1) The total emission of CO2 by Shared-adus increases 1.8 times as long as business as usual. 2) CO2 emission occurred by vacant travel accounts for about 25% of the total of CO2 emission. 3) A higher level of service of Shared-adus operation increases the total of CO2 emission. 4) The environmental footprint of Shared-adus tends to increase in low-density areas.
