I just got this and was not aware that you asked an earlier follow up. I apologize.
I am a criminal attorney however, the answers I provided you with were not anything that would be wrong either way. The law, criminal or civil notwithstanding, requires that a lawyer advocate on behalf of a client or that an unrepresented defendant represent himself.
Traffic cases are sometimes civil, sometimes, criminal and sometimes administrative depending upon the state. In many driving without insurance is a misdemeanor
, as it actually is in California. An arraignment -- which is the formal reading of the charges against the defendant and would indicate that this is, in fact, a criminal and not a civil proceeding. The more serious traffic violations are misdemeanors in most states -- leaving the scene, driving on a suspended license, reckless driving, dui, and so forth.
Anyhow after the charges are read to the defendant he is asked how he pleads. The only one that preserves all of his right is "not guilty." All of the others close doors, as he has already unfortunately learned. Very little more happens at an arraignment. If the DA has an offer, he can convey it and the defendant can take it or not. If not, the case is adjourned to another date, and sometmes to another courtroom. No motions are filed at arraignments because the arraigning judge is not generally be the one who is assigned to the case.
I think you won't hear from the judge at all, so you might as well go forward if it's convenient. If your son writes a motion, etc., then it has to be a motion. Motions are formal legal documents. The court can reject them if they are not accurate as to format and to law. While you could file it for your son if he prepared it, a judge is not allowed to have ex parte communication with regard to a case. A copy of what the judge gets should be given the DA who would have the right to oppose it.
It's entirely possible though that in a traffic proceeding laws are more relaxed. So I think at this point it's probably best that I opt out in favor of a California lawyer who could take you the rest of the way.
This should come out the way you want it to, but you're going to end up spending more than $500 in aggravation, and if it doesn't come out right, you're going to wind up having to pay more to undo it. I'd rethink letting a lawyer handle it. He could likely do this without your son at all.