How far should you be able to see in your vehicles rear view mirrors?

In a vehicle's rearview mirrors, you should ideally be able to see at least a few car lengths behind you, which typically translates to a distance of about 200 to 300 feet. This allows for a clear view of approaching vehicles and helps with safe lane changes and reversing. The side mirrors should also be adjusted to minimize blind spots, allowing you to see adjacent lanes and vehicles. Properly positioning these mirrors enhances overall road safety.