Three ghost bikes were installed in Vienna in March 2008. They commemorated 3 fatal crashes from 2006 and 2007: one woman and one man, both bike commuters, who were run over by trucks, and one messenger who hit a car. The ghost bikes were put up to raise awareness of the dangers and harm done by cars to the nonmotorized participants in urban traffic: cyclists and pedestrians.
We had an amazing echo in the media, especially because the police wanted to remove the first bike after one day, which we prevented. The reactions of the people around here were very positive in general.
Two more ghost bikes were installed on October 18, 2008 to mark "Black Wednesday," when two cyclists were struck and killed within two hours.
The three bikes installed in March have been removed, and the bikes used to replace them were removed as well. Organizers in Vienna remain hopeful that local authorities will recognize the value of this endeavor and work with them to preserve the memorials.