If your mirrors aren’t adjusted correctly, a blind spot appears. A blind spot is a part of the road that you can’t see, so you may miss a car traveling in an adjacent traffic lane. In order to eliminate blind spots, adjust your side-view mirrors so that you can’t see your car in them. To check if there is a blind spot, drive past another parked car in reverse, looking in your side-view mirror. As soon as it’s out of the picture, you should see it with your peripheral vision.
The rear-view mirror must be adjusted so that you can see the back window of your car entirely. When adjusting the mirrors, you should be in your normal driving position.