Even when your mirrors are properly adjusted, there are still areas that you can’t see in your mirrors. These are called blind spots. The largest, most dangerous blind spots are to the sides of your vehicle. Whenever you’re going to turn or change lanes, check your mirrors and also do a shoulder check to make sure that the blind spot on that side is clear. (Look at least 45 degrees over your shoulder.) Your vehicle also has smaller blind spots at the front and at the rear.