When is it safe to return to your lane after passing a vehicle?

• When the driver you passed slows down to let you return to your lane
• When you are at least 50 feet ahead of the vehicle you passed
• When you can see both headlights of the vehicle you just passed in your rearview mirror
  Explanation:

  "After passing a vehicle, it is safe to return to your lane when you can see both headlights of the vehicle you just passed in your rearview mirror. This ensures that you have left enough distance between your vehicle and the one you passed, reducing the risk of a collision when merging back into your lane."
• Only after you have put your turn signal on