I think there is another possibility. If not for another rider coming across him, when would aid have been summoned in this case? It is a real issue if a fall leaves a rider incapacitated, alone and in need of assistance. All vehicles are tracked by GPS aren’t they? For the motos they could have a cord say from wrist to handlebar, plugged in so that a signal via the GPS unit could alert race control if it was pulled out by a fall. Since falls are common there would have to be an OK button for the rider to press to advise race control there is no need for assistance. If the alert signal is not cancelled by the ok signal within say 5 minutes then the helicopter would be directed to the GPS location. To allow the rider to dismount the cord would also have to be able to be unplugged without activiation. Perhaps it would be possible to have a wireless connection to a shock sensor so that it could be determined whether the rider was moving or not after a fall.
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