I could see in a location like a trailer park, becuase in Alabama, they tell you that when we have a tornado advisory, they go somewhere else besides their trailer. And also a trailer park is a relatively small area so within 10 min of one being spotted you could get to a common shelter safely.
We do not have any laws like that down here, except that Shopping Malls must have a place for everyone to assemble in.
I just don't want to see ya all trying to get somewhere when a twister is coming and get hurt in the process!

Army Guy