During night works on high speed line track to change a long switch with movable frog point. The machines from above named "Lorrys" carries the complete switch pre-assembled with rails and concrete ties. "Lorrys" are remote controlled trolleys (lower left worker have remote control in hands) where switch ties are placed on, this switch need 11 Lorrys to move the whole on temporary track that you can see under Lorrys. The machines from above are remote controlled gantries which can support the complete switch when Lorrys are removed, and moves right or left to place correctly the switch on ballast after that temporary track have been removed by workers which waiting along the track.
