Thank you for your question. I look forward to working with you to provide you the information you are seeking for educational purposes only.
If you did not have the current tags displayed, you can plead not guilty and seek a hearing, but they do not have to give a warning for violations. You can seek to go to the hearings office and provide proof the tags were current at the time, just not on the car. I would request a hearing, because letter responses are usually not successful.
As far as the abusive nature or excessive fines, those are set by your government and you have to complain to your elected officials for that.
You have a good chance of getting the fine reduced by the hearing officer upon proof that your registration was indeed current at the time of the citation, which is going to be your best chance on this if there are no defects with the citation that you can use to get it dismissed completely.
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