Ignore the motorcycle bit completely and just think physics
You could trigger this on any oscillating “body” if that body is oscillating at a certain frequency and amplitude combination.
It just so happens motorcycle engines produce that combination. There would certainly be others. tHe sustained nature of the shaking would also be cause for concern but I didn’t see any mention of duration in the support article
You could trigger this on any oscillating “body” if that body is oscillating at a certain frequency and amplitude combination.
It just so happens motorcycle engines produce that combination. There would certainly be others. tHe sustained nature of the shaking would also be cause for concern but I didn’t see any mention of duration in the support article