How should you indicate your intention to turn, slow down, or stop?

• By honking your horn.
• By using hand gestures.
• By using arm signals or the turn indicators on your vehicle.
  Explanation:

  "You should signal for at least 100 feet or 1/3 of a block before you turn, slow down or stop. You can use the turn indicators on your car or you can use arm signals. When you use arm signals, bring your arm in during the actual turn to keep control of the steering wheel."
• By waving your vehicle in the lane.