In 2000 nine young people were trampled and killed during a concert with Pearl Jam at Roskilde Festival. Large and successful outdoor concerts had been taking place at Roskilde without mishap since the early 1970's, and event organizers were very experienced in safety and crowd control.

Since the tragedy, new crowd control measures have been put in place at Roskilde Festival. The audience is divided into a number of fenced zones, allowing security guards to get closer to the crowd. A crane hovers over the audience, with cameras that can zoom in to a potential trouble spot. The organizers have also installed a traffic light on stage. A red light means stop everything you're doing and look around to see if anyone's in trouble.

This project investigates how organizing for crowd safety can be achieved in order to prevent alike tragedies at similar events.