"Martin Hotze" wrote in message
...
well, planes (up to B737 etc.) at our local airport here (LOWI) depart
over
the city, too. we can't shut down the whole city for all those planes.

Ever heard of "cost/benefit analysis"?

And our rescue helicopters are flying over our highways, too. halting the
traffic on this very highway brings half od Europe to a stop.

Are your rescue helicopters carrying 750kg blocks of concrete? If so, you
may want to reconsider a) where you have them fly, and b) what they are
carrying. If not, I fail to see the relevance.

The point here is that the cost of rerouting the helicopter or temporarily
suspending operation of the cable car is incredibly small, compared to the
potential cost of an accident, no matter how unlikely.

Pete