After overtaking another motor car a two lane road you can best judge when it is safe to drive back into the right hand lane by?

After overtaking another vehicle on a two-lane road, you can best judge when it's safe to return to the right-hand lane by checking your mirrors for any oncoming traffic and ensuring that you can see the front of the vehicle you have just passed in your rearview mirror. Additionally, ensure there is enough space to safely maneuver without cutting off the overtaken vehicle or endangering yourself. Always signal your intention to change lanes to alert other drivers.