When it is safe to re-enter the lane of a large vehicle while passing, what should you see?

The correct answer, which emphasizes what you should see when re-entering the lane while passing a large vehicle, is the front of the truck in your rear view mirror. This indicates that you have successfully passed the vehicle and have enough distance between your vehicle and the large one, allowing for a safe re-entry into your lane. It shows that the truck is no longer immediately beside you, reducing the risk of a collision as you maneuver back.

Seeing the front of the truck in your rear view mirror confirms that you are moving ahead of the vehicle, which is crucial for maintaining a safe distance when passing larger vehicles that may have blind spots. This practice helps avoid dangerous situations that might arise if you were to return to the lane too early, potentially placing you in the path of the large vehicle.

The other choices do not provide the same assurance of safety. For instance, seeing the driver waving might be a friendly gesture, but it does not give you critical information regarding the position of the large vehicle relative to yours. Similarly, seeing the rear of the truck in your side mirror could indicate you are too close to the vehicle to safely return to your lane. Lastly, seeing the entire truck in front of you isn't practical during a pass, as this could lead