Sharing of control for avoiding collisions

Effects of control authority on human-machine interaction, cooperation and performance

抄録

This paper discusses design of control authority shifting between a driver and an assistance system while changing lanes under shared control. Two means are distinguished for system’s intervention into steering maneuver during lane change: (i) to increase the steering friction torque to resist hazardous lane changing maneuver (haptic system), and (ii) to cancel the steering input by the driver in order to prevent hazardous lane change (mixed system). Results of an experiment with a driving simulator showed: 1) Drivers’ reaction time was earlier and the drivers were less error-prone when supported by the haptic system, 2) Both systems improved safety up to a certain level, 3) More collisions were observed when drivers had to avoid sudden traffic changes while receiving assistance, and 4) There was a positive relationship between drivers’ willingness to cooperate with a system and their ability to regain the control.