4. Adjust Your Side Mirrors the “Real Driver” Way to Kill Blind Spots

Ninety-nine percent of drivers set side mirrors so they can see the side of their own car—creating huge blind spots. Sit in your normal driving position, lean your head against the driver’s window, and adjust the left mirror until you just lose sight of your car’s rear. Then lean to the center console and do the same for the right mirror.
Now your rearview mirror covers what’s directly behind you, while side mirrors cover everything else. Blind spots virtually disappear. This one adjustment has prevented more lane-change accidents than any fancy camera system. Real drivers swear by it and never go back.