For multi crane lifts, the required number of signal persons is one and the deduction is 25%. Which option matches?

• A. 2; 10%
• B. 1; 25%
• C. 1; 5%
• D. 0; 0%

Answer: (B)

In multi-crane lifts, signaling is standardized around central coordination. A single signal person directs all crane operators, keeping communications clear and the load path coordinated. Because one person can manage signaling for the whole operation, you apply a 25% deduction to the number of signal personnel you’d otherwise need if signaling were duplicated for each crane. So the correct pairing is one signal person with a 25% deduction. The other options imply more signal personnel or no efficiency gain, which doesn’t fit how centralized signaling works in multi-crane lifts.