The more often the better, i think in drivers ed they say something like every 8-12 seconds?
yes
True
Check your mirrors and signal your intentions.
Once every 10 to 15 seconds
You should always check your gauges, seat belt, and mirrors after you start your car.
Every 5 to 7 seconds.
About every 10 to 20 seconds
Whenever you are adjusting your seat you must check all mirrors in your car. If you don't have a clear view in the mirrors, then you must adjust them before you start driving. Always!
You should check your mirrors every 8-10 seconds and when entering a road way, changing lanes etc. You should also have your mirrors adjusted properly so you do not have to look over your shoulder to check them. There is no blind spot on a car. Move your mirror out, you'll see more stuff. There is info online about how to adjust your mirror so you don't have a blind spot. Once you do that, scan them often. What is the point of a mirror if you don't use it? edit: The guy that originally posted this is not correct. You should indeed check your mirrors every 8-10 seconds to see everything happening around you but there is no way to adjust the mirrors to eliminate the blind spot. You need special mirrors to eliminate the blind spot.
indicate left or right, it depends what side lane you want to go on then you should Check your mirrors, signal, check your blind spot and then proceed.
i heard it was every 3-4 seconds :) which is heaps
When changing lanes you should do the following Signal check your mirrors change lanes turn signal off. What step is missing from this lane-changing procedure?