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CRANE MOTION HAND SIGNAL WHISTLE, BELL, BUZZER SIGNAL

Hoisting

raise

2 short

••

Luffing

boom up

3 short

•••

Slewing

right

1 long, 2 short

—••

Jib-trolley

out:

telescoping

boom extend

1 long, 3 short

—•••

Travel and

traverse

Not applicable

Hoisting

lower

1 long

————

Luffing

boom down

4 short

••••

Slewing left

1 long, 1 short

—•

Jib-trolley in:

telescoping

boom retract

1 long, 4 short

—••••

Stop

1 short