What does a 3 short audible signal indicate when the crane is moving?

What does a 3 short audible signal indicate when the crane is moving?

• A. Stop
• B. Go ahead
• C. Back up
• D. Pause

Answer: (C)

In crane operations, audible signals provide quick, standardized instructions to the operator when visibility or line-of-sight is limited. Three short sounds specifically signal the operator to back up. So when the crane is moving and you hear three short signals, you should reverse the movement, making sure the path behind is clear and the load remains under control. This cue helps coordinate motion safely and prevents collisions with nearby obstacles or personnel.

In crane operations, audible signals provide quick, standardized instructions to the operator when visibility or line-of-sight is limited. Three short sounds specifically signal the operator to back up. So when the crane is moving and you hear three short signals, you should reverse the movement, making sure the path behind is clear and the load remains under control. This cue helps coordinate motion safely and prevents collisions with nearby obstacles or personnel.