Massachusetts Hoisting License Practice Test

If a signal person extends his arm at shoulder height, makes a fist, and sticks his thumb up, what action does he intend for the operator to perform?

1. Load down

2. Boom up

3. Move forward

4. Stop all operations

The correct answer is: Boom up

When a signal person extends their arm at shoulder height, makes a fist, and sticks their thumb up, they are using a specific hand signal to communicate with the operator. This gesture is widely recognized to indicate that the operator should raise the boom. The fist represents a solid, clear signal, while the thumb up symbolizes "upward" movement. Therefore, in the context of crane operation, this signal unequivocally instructs the operator to boom up. Understanding hand signals in construction and lifting operations is crucial for ensuring safety and efficiency on job sites. The interpretation of each signal is standardized to minimize the risk of miscommunication. Hence, this particular signal is important for maintaining clarity in operation and ensuring that all personnel are aligned in their understanding of the movements being requested.