threshold determining {HEAD ~ means} for determining {TAIL ~ a velocity threshold value} functionally related to said crash displacement value; and 
for determining
threshold determining { HEAD ~ means } for determining { TAIL ~ a velocity threshold value } functionally related to said crash displacement value ; and
OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH