Abstract: A method for controlling an actuatable safety device for protecting an occupant of a vehicle includes sensing a left upfront vehicle acceleration via a left upfront sensor, sensing a middle upfront vehicle acceleration via a middle upfront sensor, and sensing a right upfront vehicle acceleration via a right upfront sensor. The method also includes sensing a central vehicle acceleration via a central airbag control unit. The method further includes determining the occurrence of a vehicle crash event in response to determining that each of the left, middle, and right upfront vehicle accelerations exceeds a predetermined magnitude and is phase shifted from the central vehicle acceleration.

Abstract: A method for controlling an actuatable safety device (110) for helping to protect a vehicle occupant includes sensing left-front and right-front pressure values via a pressure tube sensor (18). The method also includes executing pressure tube metrics that evaluate the left-front and right-front pressure values and selecting switched crash thresholds in response to the pressure tube metrics. The method also includes sensing vehicle acceleration parameters (99) and executing one or more crash metrics that evaluate the vehicle acceleration parameters to determine whether the switched crash thresholds are exceeded. The method further includes controlling deployment of the actuatable safety device (110) in response to determining that the switched crash thresholds are exceeded. A vehicle safety system (100) implements the method.

Abstract: A method for controlling actuation of an actuatable restraint in response to a vehicle rollover event includes detecting whether the vehicle (12) is being driven off-road. The method also includes determining whether the vehicle (12) is undergoing a roll event (99) that would warrant actuation of the actuatable restraint (20) if the vehicle was being driven on-road. The method further includes actuating the actuatable restraint (20) in response to determining that a roll acceleration (D RATE) of the vehicle (20) indicates that the roll event is continuing. A vehicle safety system (10) includes an actuatable restraint and a controller (50) configured to control actuation of the actuatable restraint according to this method.