Yaw sensor. A Sensor used to measure a vehicle’s angular velocity about its vertical axis in degrees or radians per second in order to determine the orientation of the vehicle as it hard-corners or threatens to roll-over. A Sensor used to sense and report a sudden deceleration/lock up of a vehicle in motion to the vehicle's ABS system. ABS Deceleration. Rotational Speed. Stability Control Vehicle Turn Rate. Suspension.