The DCS 60 anti-collision and zoning system designed by AMCS Technologies was chosen to equip 11 Liebherr and Potain flat-top cranes on the site of the new Vinci headquarters in Nanterre (France). The DCS 60 manages the interferences between the many cranes and acts on their mechanisms to slow them down an to ensure their complete immobilization when there is a risk of collision between two cranes. The SUP 61 supervision tool has also been installed in the offices to monitor the site’s activity in real time. Connected via radio link to the network of the DCS 60 systems, the SUP 61 can display on a single screen the different movements and information of all cranes. It can intervene remotely on the neutralization function of the system selectively but also gives the possibility to activate / deactivate prohibited zones according to hazards and movements on the site.