The capacitance detection apparatus 8, wherein the capacitance detection apparatus is provided in a vehicle, the capacitance detection apparatus starts operation when {HEAD ~ an identification} is checked and recognized between {TAIL ~ the vehicle} and the outside of the vehicle, the timer starts counting at the start time of the capacitance detection apparatus, and the counted value is judged by the judging circuit and classified into the initial counted value or the normal counted value 
The capacitance detection apparatus 8 , wherein the capacitance detection apparatus is provided in a vehicle , the capacitance detection apparatus starts operation when { HEAD ~ an identification } is checked and recognized between { TAIL ~ the vehicle } and the outside of the vehicle , the timer starts counting at the start time of the capacitance detection apparatus , and the counted value is judged by the judging circuit and classified into the initial counted value or the normal counted value
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