Standard BS 7121 hand signals used by slingers, signallers, and crane operators on UK construction sites.
Hand signals are the primary method of communication between a slinger/signaller and a crane operator when radio communication is not available or as a backup. These signals follow BS 7121 (Code of practice for safe use of cranes) and are required knowledge for all CPCS lifting operations categories.
Important: The signaller must be clearly visible to the crane operator at all times. Only one person should give signals to the operator unless a relay signaller system is in place.
Right arm raised, palm forward, rotate hand clockwise.
Right arm extended, palm down, rotate hand anti-clockwise.
Place one hand over the signal hand. Used as a modifier with any motion signal.
Right arm extended, palm forward, move arm left and right.
Both arms extended, palms down, wave rapidly left and right.
Right arm extended, thumb up, flex fingers to signal jib/boom raise.
Right arm extended, thumb down, flex fingers to signal jib/boom lower.
Arm extended with fist clenched. Lower the boom and hold position.
Both fists together at chest, thumbs pointing outward.
Both fists together at chest, thumbs pointing inward.
Arm extended horizontally, pointing in the direction of required slew.
Arms bent, beckon towards or push away from body to indicate travel direction.
Clasp hands together in front of the body. Means secure the load — no further movement.
Tap fist on top of head, then give standard hoist signal.
Tap elbow with one hand, then give standard hoist signal.
Disclaimer: Always confirm signals with the crane operator before commencing a lift. Site-specific signal plans may vary. These diagrams are for revision purposes only and do not replace formal training or the full BS 7121 standard.
Download CPCS CPD Mastery to practise crane hand signal questions and prepare for your CPCS renewal test.
