Abstract: Measurements of rotation rates (10) obtained with a rotation rate sensor (150) on board of a vehicle (200) are corrected by a temperature dependent offset (25). This offset (25) is provided from a table (20). The table (20) may be updated if the vehicle (200) is at rest by determining a temperature (15) and determining a rotation rate (10) from the rotation rate sensor (150). Additionally, ageing of the rotation rate sensor (150) is taken into account. A total error (31) of the corrected rotation rate (30) may also be provided.

Abstract: A safety arrangement for a vehicle. The safety arrangement has a control unit; one or more sensors, a road detection arrangement; and one or more vehicle safety systems. The control unit processes the signals from the sensors and determines whether the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. The control unit will activate one or more of the vehicle safety systems if it is determined that the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. Signals, or derived quantities, from the sensors are compared against a threshold to determine whether to activate a vehicle safety system. A first threshold level is used if the vehicle has not or is not likely to leave the road, and a second threshold level is used if the vehicle has or is likely to leave the road.

Abstract: A safety arrangement for a vehicle. The safety arrangement has a control unit; one or more sensors, a road detection arrangement; and one or more vehicle safety systems. The control unit processes the signals from the sensors and determines whether the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. The control unit will activate one or more of the vehicle safety systems if it is determined that the vehicle is travelling over rough terrain, entering a ditch-like feature, or is airborne. Signals, or derived quantities, from the sensors are compared against a threshold to determine whether to activate a vehicle safety system. A first threshold level is used if the vehicle has not or is not likely to leave the road, and a second threshold level is used if the vehicle has or is likely to leave the road.