Hailing from Springfield, IL, I remember how hard it was to keep a clean record in that state.
But the laws have obviously changed, otherwise, I would have lost my license four or five times then! It was "three strikes, you're out" back then.
Move to Texas! You can plead "no contest" and pay a fine with no points on your record under the following stipulations...(1) you didn't go 20+ over the posted limit, and (2) you don't get stopped for a traffic violation (anywhere) within 90 days of the first violation! If you do, then the old AND new violation go on your record! Otherwise, they erase the violation from your record and you are free and clear once again!
Looking back, it would have just been easier (and much cheaper) to just slow down!