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

The correct choice emphasizes the importance of ensuring a safe distance between your vehicle and the one you've just passed before returning to your lane. By waiting until you can see the entire front of the vehicle you passed in your inside mirror, you confirm that there is sufficient space for you to move back into your lane without risking an unsafe situation. This consideration helps prevent conflicts and possible accidents by ensuring the other vehicle is adequately behind you and not close enough to pose a hazard as you merge back.

This practice enhances road safety because it allows you to make a judgment about the speed of the vehicle you passed and your own positioning on the road. Returning to your lane too soon could lead to a dangerous situation where the other driver might have to brake or swerve to avoid hitting you. Engaging in safe passing practices, such as waiting until you see the whole front of the vehicle in your mirror, helps in maintaining safe driving habits.