How should you indicate a change in speed when preparing to exit a controlled-access highway?

• Use the horn
• Use hand signals
• Flash the headlights
• Use either brake lights or a turn signal
  Explanation:

  "When preparing to exit a controlled-access highway, you should use your turn signal to indicate your intent to exit and brake lights to signal a reduction in speed. This alerts other drivers of your actions, helping ensure a safe and smooth exit."