Standard Hand Signals in Lifting Operations

A crane lifts a bundle of rebar over a busy site. The operator is watching the designated signaller near the landing point. Suddenly two other workers start waving in different directions, one trying to warn about a nearby power line. Three conflicting signals, and the load is in the air. That moment is exactly what the one-signaller rule prevents.

1. One Designated Signaller, One Exception

Only one person gives signals to the operator, named before work starts. The operator follows that person alone and ignores everyone else.

The single exception is the emergency stop: anyone on site, in any role, may give it, and the operator must obey immediately without discussion. The person who sees the hazard is often not the signaller.

Handover between signallers is explicit, known to the operator, and never happens while the load is moving. If the operator is unsure who is signalling, he stops.

2. The Main Signals

Give one signal at a time and wait for the operator's response. Rapid sequences confuse more than they direct.

3. Radio When Sight Is Lost

• A dedicated channel for the lift only, used for nothing else.
• Both radios tested before work, with a spare battery ready.
• Every instruction identifies speaker and recipient, then states the command clearly.
• The operator repeats the instruction back and the signaller confirms. No confirmation, no movement.
• Long movements are narrated continuously. Silence during motion means stop.
• If communication drops or becomes garbled, the operator stops immediately.
• Where two signallers cover a long route, only one talks to the operator at a time and handover is announced.

One agreed stop word must be known to everyone on the channel and obeyed without question.

4. The Pre-Lift Briefing

1. Who signals: named, and visually known to the operator.
2. Communication method: hand signals or radio, which channel, and the fallback.
3. The route: pick point, landing point, what it passes over, planned pause points.
4. Hazards: overhead power lines, adjacent structures, pedestrian and vehicle movement, ground condition and wind.
5. Exclusion zone: its boundary and who watches it.
6. Stop scenario: what happens if the lift halts, and where the load can be set down safely.
7. Stop authority: a reminder that anyone can stop the operation.

5. Signaller Position and Visibility

• High-visibility clothing: a reflective vest in a colour that distinguishes the signaller, plus helmet and safety footwear.
• A fixed, visible position: somewhere the operator can see you throughout, never behind the load or structure.
• Never under the load: nor in its path or potential fall zone.
• Full view of load and landing area: if you cannot see the destination, do not signal movement toward it.
• Safe ground behind you: so stepping back does not put you in an opening or another machine's path.
• Light: do not stand with the sun directly behind you into the operator's eyes.
• Hands free: no tools or phone while signalling.

Conclusion

Hand signals are a shared operational language, and their value lies in discipline, not quantity. One named signaller directs the crane; anyone may call the emergency stop. Signals are learned, not improvised, and given one at a time. When sight is lost, move to disciplined radio with read-back and confirmation. A signaller out of view means an immediate stop, not improvisation. The pre-lift briefing turns all of this from written rules into a real agreement between people who know their roles. For signal details and signaller qualification, always defer to manufacturer instructions and local regulations.