A method of forming a semiconductor device is provided that includes forming an oxide containing isolation region in a semiconductor substrate to define an active semiconductor region. The tag body may be provided with an arcuate channel through which an arcuate detacher probe can be guided for releasing the attaching assembly part. When nearly or fully deployed, the lower edge of the curtain engages an adjacent part of the motor vehicle so as to form a virtual tether therebetween resisting relative movement between the curtain and the adjacent part. Moreover, the control unit is in connection with a plurality of signal receivers positioned at the upper and lower part of the main frame so as to receive signals sent by the signal transmitters on the boxing gloves and shoes. The method includes determining a stationary count indicative of the number of targets detected by the radar system that are within a travel path of the vehicle and are classified by the radar system as stationary, and indicating that the vehicle is proximate to a stationary structure if the stationary count is greater than a count threshold.