And they don't want people out riding alone in case there is an accident? Is that it? I know my BO prefers that people not ride if no one else is around - and that if we must do so, we carry a cell phone on our person (I use one of those boot-strap phone holders). It's not a perfect solution, but the barn isn't very isolated - there are people within shouting distance in case something happens.
It might be worth finding out if that's the case, then, because you could resolve the problem by bringing someone with you?