It can also describe a site wide coordinated system, installed on many tower cranes in close proximity.
[2][3] A Ministry of Labour directive issued in 1987 made anti-collision systems compulsory on all tower cranes in France.
[5][6] In 2015, Luxembourg required automatic devices to be installed to avoid the risk of collision between tower cranes.
[7] Various sensors are used to measure the position, velocity and angle of each tower crane’s moving parts.
This allows the anti-collision system to automatically slow down and stop the crane if there is a risk of an accident.
[1] Anti-collision lights are required on tower cranes operating in or near to airfield flight paths.
[8] A draft standard setting out the functional requirements of tower crane anti-collision devices and systems is open for comment.