Yellow plus yellow equals red. Red is red. All calcio and soccer fans know this. One yellow is a warning concerning a rule infraction. Red is given for a major infraction. So, if you get two warnings it is the same as getting a red. But getting a red with no warning indicates major consequences.
I like this idea. It leaves almost nothing to the imagination. Altho some players argue the call, everyone knows the rules. Everyone can see the yellow or red card being held aloft by the referee. Everyone knows that first yellow is a warning and you had best be on your good behavior or you risk getting a red card and that means O U T!
I think that this colored card system could be put to good use elsewhere. My first thought was for teachers and parents. But, I really think it would be good to have them in the car. Instead of using those hand signals when you are miffed by another driver you could just hold up a yellow or red card. It might even work in the post office when you get bad service..or quite a few public offices. How about the toll booth taker who acts like you are bothering his smoking break?
Join in with me...with your ideas!