Hans, this is so sadly true - as per the graphic images that you have captured on the signs.
A workmate of my daughters got killed on the way to work in Melbourne only about 18 months ago when a hundred year old elm dropped on her. She left a husband and two children; she was a leading researcher in her field and was only about 40 years old. What a waste.
The somewhat green local council had inspected the tree only a few weeks prior and gave it a clean bill of health.....
*********************
The second image well sums up what eucalypts do - especially if they are under heat or drought stress. Many Australians have been killed by falling branches and trees toppling. Better to forgo the shade.
They do at times, however, get their revenge!