A plurality of lane boxes are provided for backup of a touch signal and a starting block signal, in {HEAD ~ case} of {TAIL ~ failure} and misoperation of the control device 
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A plurality of lane boxes are provided for backup of a touch signal and a starting block signal , in { HEAD ~ case } of { TAIL ~ failure } and misoperation of the control device
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH