NCCER Crane Signal Person & Communication 3

Question 1

When radio communication is used, what must occur before the signal person issues movement commands?

Accepted Answer

The operator must acknowledge receiving the signal person's identity

Answer

The signal person must provide their name, location, and load weight

Answer

Standard hand signals must still be used simultaneously with radio

Answer

A pre-lift radio check meeting must be conducted every hour

Question 2

If radio communication fails unexpectedly during an active crane lift, the operator should:

Accepted Answer

Stop all crane operations immediately until communication is restored

Answer

Continue the lift at reduced speed until a landing zone is reached

Answer

Switch to shouted voice commands from the ground crew

Answer

Proceed based on the last signal received before communication was lost

Question 3

Under OSHA standards, a signal person is NOT required when:

Accepted Answer

The operator has full clear view of the load and path, and no personnel are in the hazard area

Answer

The crane is operating below 50% of its rated capacity

Answer

The load weighs less than 2,000 pounds

Answer

The crane is operating on a level, paved surface

Question 4

What must be established between the operator and signal person BEFORE any lift begins?

Accepted Answer

A mutual understanding of the signals and communication method to be used

Answer

A load weight estimate accurate to within 10% of actual weight

Answer

Written approval from the on-site lift supervisor or safety officer

Answer

A minimum 30-minute pre-lift inspection documented in writing

Question 5

The 'travel' signal for a crawler crane moving on both tracks is given by:

Accepted Answer

Both fists in front of the body making circular motions about each other

Answer

Pointing in the direction of travel with one extended arm

Answer

Waving both arms forward simultaneously

Answer

Moving a flag in a figure-eight pattern

Question 6

During nighttime crane operations, hand signals may still be used if:

Accepted Answer

The signals are clearly illuminated so the operator can see them

Answer

The signal person is wearing high-visibility clothing only

Answer

A written supervisor approval is obtained for night signaling

Answer

The crane's work lights are focused directly on the signal person

Question 7

The hand signal for 'retract boom' (telescoping inward) is:

Accepted Answer

Both fists in front of the body with thumbs pointing toward each other

Answer

One arm extended with thumb pointing downward

Answer

Both hands waving palm-in toward the crane

Answer

Arms crossed at chest level, hands pointing down