A book on safe driving I read said in normal driving your eyes should mainly be on the car ahead, and every 5 or 10 seconds glance at your mirrors to see what e

A book on safe driving I read said in normal driving your eyes should mainly be on the car ahead, and every 5 or 10 seconds glance at your mirrors to see what else is going on and also do a broader scan. And of course in different circumstances like turning, you should look around much more.