When is it appropriate to move back to the right after passing a vehicle?

The appropriate time to move back to the right after passing a vehicle is when you see both headlights of the vehicle in your rearview mirror. This indicates that you have sufficiently cleared the vehicle you just passed, ensuring a safe distance between your vehicle and the one you have overtaken.

Choosing to return to your original lane based solely on when you pass the vehicle or when you perceive a clear road ahead may not account for the speed or distance of the vehicle behind you. Additionally, reaching the speed limit does not necessarily guarantee that you are safe to merge back. The key is to ensure you have a clear view of the passing vehicle, confirming it is at a safe distance before you change lanes. This practice is essential for maintaining safety on the road.