If you're a younger rider with some talent & ambition it's a very good thing. You get promoted to Formula Xtreme and then the same thing happens there; once you become successful in that class you're then promoted to Regional Superbikes, which is the highest level of racing below National Superbikes. My good friend Erik was given a yellow card after the last race meeting at Red Star because he'd broken below his lap time bracket. That was very impressive cos it was the first time he'd ever ridden the GSXR-750. I think that if/when he gets another 3 yellow cards he'll be automatically promoted in to Formula Xtreme.
However, there is an age limit for this enforced promotion. Silli is above said age limit and the race organisers can never force promote him up to the next class! If, at some stage in the future, he decides that he's fast enough and wants to move up to the next class he can apply to do just that.