It is state by state but does not work most places anymore.
What used to happen is if you owed $135 and sent $140, the computer would create a refund of $5 and send you a check. If you never cashed it, the matter was never closed and the points did not show up.
Most states have corrected this, but it is always worth a chance.
I've been told the most effective method is to dispute tickets 6-12 months later if from another state... I have no idea if it works for real tickets, but a while ago, I had a ticket from Wyoming on my Ohio record. I had never been to Wyoming and sent a letter of dispute to the Ohio DMV. It went away about 2 weeks later. I believe they either have to pull hard evidence or delete...
Sean