Which signal indicates the intention to slow down or stop?

• A. Arm out moving up and down
• B. Arm out to the right
• C. Rear lights at back lit
• D. Rotating arm in forward direction

Answer: (A)

When a driver can’t or shouldn’t use indicators, arm signals communicate intentions clearly. The signal for slowing down or stopping is the left arm extended out of the window with the hand moving up and down. The repetitive up-and-down motion is distinct and understood by other road users as a cue to decelerate or stop.

Other signals represent different actions: extending the arm straight out typically indicates a left turn, while the arm bent upward signals a right turn. A signal involving rear lights doesn’t convey a specific driving intention in the same way, and a rotating arm isn’t a recognized hand signal.