After passing another vehicle on a two-lane road, when is it safe to return to your lane?

It is important to ensure that you have safely returned to your lane after passing another vehicle. The correct answer indicates that you should wait until you can see both headlights of the passed vehicle in your rearview mirror. This visibility confirms that you have sufficiently cleared the other vehicle and that it is a safe distance behind you, allowing for a secure return to your lane.

This approach prioritizes caution by ensuring that the passed vehicle is far enough away to prevent any potential collision if it were to accelerate or if you needed to maneuver suddenly. Ensuring that you have visual confirmation in the rearview mirror helps promote safe driving practices, keeping you aware of the positions of other vehicles on the road.