To correctly adjust the outside mirrors this way, follow these two steps:

* For the driver's side mirror, roll up the window and press your head against the glass. Adjust the mirror so that you can just see the edge of the car.
* For the passenger's side mirror, place your head in the center of the car (directly behind the inside mirror mount) and adjust the outside mirror so that you can just see the edge of the car. This is necessary even with convex (curved) mirrors where the image is distorted a little.

If all three of your mirrors are aligned correctly, you should be able to see a vehicle leaving your rearview mirror seamlessly transfer to one of yourside view mirrors without any delay Vehicles present that aren't visible in your mirrors are the ones you need to worry about. Drivers with good peripheral vision will see them when they check their sideview mirrors. However, if you rely solely on your interior rearview mirror, you're asking for trouble.