NCCCO Signals and Communication Standards 4

Question 1

When radio communication is used for crane operations, who is responsible for ensuring the communication system is functioning before lifts begin?

Accepted Answer

Both the operator and signal person

Answer

Both the operator and signal person share responsibility for verifying radio communication is working before operations begin.

Question 2

If a signal person gives a 'STOP' signal and the operator does not respond, what should the signal person do next?

Accepted Answer

Give the emergency stop signal and take all necessary actions to halt the lift

Answer

If a STOP signal is ignored, the signal person must escalate to the emergency stop signal and take all available actions to halt crane movement.

Question 3

What does a signal person do when they raise a fist with the thumb pointing upward?

Accepted Answer

Hoist (raise the load)

Answer

Thumb up with a raised fist is the standard hand signal meaning Hoist — raise the load.

Question 4

During a blind lift where the operator cannot see the load, which of the following is the MOST critical requirement?

Accepted Answer

One signal person with an unobstructed view must direct the entire operation

Answer

A single qualified signal person with an unobstructed view of both the load and the crane must direct all movements during a blind lift.

Question 5

Which signal directs the crane operator to travel toward the signal person?

Accepted Answer

Arm extended pointing in the direction of travel, then beckoning motion

Answer

The travel-toward signal is given by extending the arm pointing in the direction of travel followed by a beckoning motion.

NCCCO (National Commission for the Certification of Crane Operators) Practice Test