^No1 stops at stop signs other than during the test anyway. Especially not for 3 seconds unless there's oncoming traffic.
You'd be fucking stupid to not stop at a stop sign. Stop signs are there because there are dead corners, the only way to see if there is oncoming traffic is to STOP and look.
Similar is true for Give Way, those are usually fine as you can see oncoming traffic before you reach the corner, but they are essentially like stop signs if you have a car in front of you: if you are looking for oncoming traffic, chances are the guy in front will break and you will hit him.
^^I've had that happen to me once. Guy behind me was too busy checking out the highway, and didn't realise I had stopped. His radiator ended up getting pierced by my toll bar, ~$3k damage to the front of his car, $0 to me.