Before entering or exiting the interstate or other controlled access roadway, you should:

• Use your turn signal to ensure safe and predictable traffic flow
  Explanation:

  "Always use turn signal before entering or exiting the interstate or other controlled access roadway. It is crucial for safe and predictable traffic flow."
• Only use your turn signal if there is heavy traffic
• Use your hazard lights instead of a turn signal
• Only signal when exiting, not entering