And another thing to consider, is some states a "Hit & Run" is classified as a "Felony". If OP is found to have in fact committed a "Felony" by being found "Guilty" of a "Hit & Run", then OP automatically loses his CDL for quite some time to come.
Can't remember how it's worded, and don't really have time to find the legal "verbage" right now, (Turtle, quite sure you know where it's at
) but it is written somewhere in our trucking statutes.
One thing I don't understand though is how a State Trooper who is not involved in the "Hit & Run" accident investigation can issue such a ticket. In Texas, only the investigating officer of said incident has the legal power to issue citations, obtain warrants, or ultimately make an arrest on such a case as this one. Same Trooper just cannot call his buddy "Bob" some 30 miles away and say "Hey, Give That Guy a Ticket!!" "Bob" is not involved in that investigation and it will not be "Bob" sitting up there in the witness box testifying against said defendent.
Sure, there are cases where "Tom" can call "Bob" and say "Get That Guy!!", but those are usually for extreme cases. (Murderers, Robbers, etc). But in this case, "Tom" is the investigating officer, and IMO, Tom should have been the one that showed up there at the Scales to issue Citation for the accident he "Investigated".
To understand what I'm getting, watch an episode of "COPS". You will see many examples of this. Let's say an officer gets dispatched on a Domestic Violence call. He is there with the Victim. He is the Primary Representative of the State there investigating that crime. During his investigation, he has evidence that an assault did actually take place. During his Investigation it is learned the one who committed the assault is now down at the Pool Hall 3 blocks over. Investigating Officer calls another unit to go pick up the suspected assaulter (can't remember exact jargon, it's been years). Called unit snatches up suspect. In many episodes of COPS, you will see the original IO leaving assault victim and then driving over to pick up his suspect that he has evidence of where an actual law of the state was violated. IE - the assault on the victim. Or, if it's not camera, he will be at the Station for 2-3 hours filling out the paperwork against said suspect.
Just my opinion as a fellow CDL holder, I'd hate to be in your shoes right now, and wish you best of the luck. Even if proper procedures were not followed during the issuing of the citation, of which I don't know TN laws so I can't really say. You still have to deal with the "Witnesses" that are making the claims against you. 1 being the one who hit you, and 2, the one who claims to have been a "witness". Plus, you have said you have not seen the ST-3 report yet. (Accident Report) You really don't know what you're up against just yet.
Yes, I'd find a Lawyer as soon as I could.