Standard Hand Signals Flashcards
6 cards from real MASS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Standard Hand Signals flashcards as text
A signal person on a construction site extends their arm horizontally with a closed fist and thumb pointing downward. What instruction are they giving to the hoisting machinery operator?
Answer: Lower the boom
According to OSHA and ASME B30.5 standards, the hand signal for 'Lower the Boom' is to extend the arm horizontally to the side, close the fingers into a fist, and point the thumb downward.
An operator sees the signal person extend both arms horizontally out to their sides, palms down, and then swing both arms back and forth. Which of the following actions must the operator perform immediately?
Answer: Perform an Emergency Stop
The signal for 'Emergency Stop' involves extending both arms horizontally with palms down and swinging them back and forth. This signal requires the operator to halt all functions immediately.
During a lifting operation, the signal person needs the operator to shorten the telescoping boom. Which of the following hand signals should be used?
Answer: Both fists in front of the body with thumbs pointing toward each other.
The standard hand signal to 'Retract Telescoping Boom' is to place both fists in front of the body at waist level with the thumbs pointing inward toward each other.
A signal person gives the 'Hoist' signal, followed by placing one hand motionless in front of the hand giving the 'Hoist' signal. What is the intended meaning of this combined signal?
Answer: Move slowly
Placing a hand in front of the hand giving an action signal indicates that the function should be performed slowly. In this case, it means 'Hoist Slowly'.
An operator is controlling a crawler crane and needs to move both tracks forward. What is the correct hand signal the signal person should provide?
Answer: Rotate both fists around each other in front of the body in a forward direction.
For a crawler crane, the 'Travel (Both Tracks)' signal is made by rotating both fists around each other in front of the body. The direction of rotation indicates forward or backward movement.
Which of the following descriptions accurately represents the standard hand signal for 'Swing'?
Answer: Arm extended horizontally, with the index finger pointing in the direction the boom is to move.
The standard hand signal for 'Swing' is to extend the arm horizontally and point the index finger in the direction that the boom should swing.