operational wind resistance
The wind speed at which a structure must cease operations or evacuate occupants.
The operational wind resistance of any built object is the maximum wind speed (in kilometers per hour or miles per hour) at which it must cease functioning in its intended usage or evacuate its occupants. This speed is generally lower than or equal to the speed indicated by the structural wind resistance of the same structure.
The threshold concerns continued use and occupancy. A ride or transport structure can reach an operational limit while its supporting structure remains intact.
Structural wind resistance concerns damage to structural integrity. The two limits can be equal, but an operational closure at a lower wind speed does not establish structural failure.