Seat vibrotactile warning interface for forward vehicle collision avoidance

A collision warning system utilizing haptic interface is expected to be more effective than an auditory as well as visual warning types. In order to reduce the number of the traffic accidents and their injuries, this paper proposes a forward vehicle collision warning system by using seat vibrotactile interface. At first, an investigation of the frequency for using as collision warning is shown. Comparing the time response to each type of warning system, the effectiveness of seat vibrotactile warning interface is examined. Based on the examination, a forward vehicle collision warning system using seat vibrotactile is designed and installed in the experimental vehicle. Finally, the effectiveness of the proposed system is examined by test drives.