The shuttle cranes allow a loaded hoist-trolley to shuttle to the side out of the main monorail path and allow other hoist-trolleys to pass. The sister hooks with the light stand assemblies are then lowered on the shuttled hoist-trolley to perform an assembly process on the light stands. When the operation is complete, the light assembly's are raised on the hoist-trolley and the hoist-trolley is shuttled back onto the main monorail to be pushed to the next station.
Safety baffles descend when the shuttle is in operation to prevent hoist-trolleys from running off the monorail.
