NCCCO Hand Signals & Communication Protocols 2

Question 1

Who is qualified to give hand signals to a crane operator?

Accepted Answer

Only a designated, qualified signal person known to the operator

Answer

Any worker on the job site

Answer

Only the site superintendent

Answer

Anyone wearing a hard hat

Question 2

What is the standard hand signal for 'stop'?

Accepted Answer

Arm extended, palm down, held rigid — moved horizontally back and forth

Answer

Waving both hands overhead

Answer

Making a fist

Answer

Pointing at the ground

Question 3

What is the standard hand signal for 'hoist' (raise the load)?

Accepted Answer

Arm extended pointing up, index finger pointing up, moving in small circles

Answer

Both arms waving overhead

Answer

Thumbs up

Answer

Arm extended horizontally

Question 4

What should happen if the operator receives signals from two different people simultaneously?

Accepted Answer

Stop all operations and clarify who is the designated signal person

Answer

Follow the signal from the more senior person

Answer

Follow whichever signal seems safest

Answer

Average the two signals

Question 5

What is the 'emergency stop' signal?

Accepted Answer

Arm extended, palm down, moved rapidly back and forth — same as stop but more urgently

Answer

Any frantic waving

Answer

Screaming 'stop'

Answer

Running away from the crane

Question 6

When voice communication (radio) is used instead of hand signals, what protocol must be followed?

Accepted Answer

Use standard crane operation terminology, confirm each command, and maintain continuous communication

Answer

Any language is acceptable

Answer

Just speak clearly

Answer

Only use radios in emergencies