Driver's trust in automated driving when sharing of spatial awareness

Vibrotactile display has been investigated to support driver's monitoring of traffic situation when auto driving. A vibrotactile display was assumed to contribute to driver trust in automation since driver can know the spatial awareness of an automated system to predict or understand the action selection for driving. The display provided the spatial information of close traffic objects with haptic stimulus. The present study considered driving scenes of passing a motorbike when vehicles are approaching from behind. A driving simulator study was conducted to investigate effects of the spatial information and driving behavior of automated system on driver trust. The results showed that the trust was affected by the information and behavior of the system.