Everybody needs to get some perspective.
This is TRAFFIC COURT.
Presumably, the charge is running a stop sign, not vehicular manslaughter.
Perry Mason is not going to be there to cross examine anybody. Police will not grab and cuff anybody for admitting to a minor traffic violation. The judge will not hear ponderous reams of evidence from expert witnesses. He will not retire to his chambers and come back to render a verdict days later after considering briefs from both sides. Lawyers will not be jumping from their seats shouting “Objection, your honor.” Nobody will be granting anybody immunity from prosecution. NOBODY FROM THE INSURANCE COMPANY WILL BE THERE.
There will be a line of 50 or 100 people waiting to get their cases heard. Each will get one to three minutes and the judge will pronounce his verdict.
Assuming the cop wasn’t there to witness the accident, if the other guy had a lawyer rather than some goofball relatives, the cop would probably not be allowed to testify or could testify, at most, “I arrived on the scene and saw a stop sign and two smashed vehicles” (unless the other guy blurted out that he ran the stop sign).
A defense attorney would not want your relative to be there to testify. Assuming the cop didn’t witness the accident, your relative could be the only one who could testify that they saw the other guy run the stop sign and thereby convict the other guy.
And you (and the other guy) have a fundamental misconception about the function of traffic court. It is there to adjudicate a traffic offense. If the other guy is accused of running a stop sign, the court’s interest is limited to determining whether the guy ran the stop sign. IT IS NOT THE TRAFFIC COURT’S FUNCTION TO DETERMINE WHO IS AT FAULT FOR THE ACCIDENT.
After the trial, the insurance companies (assuming you’re insured) will hash out who is responsible for the accident. If they can’t agree, then the matter will be settled in a civil court, not traffic court. And, yes, if the other guy is convicted of running a stop sign, it will be held against them.
THE OTHER GUY IS AN IDIOT for wanting a witness against him to show up in court. Presumably, he is too stupid to know how to issue a subpoena and will have to get a lawyer to do it. The lawyer will presumably tell him he is an idiot.
Yes, if the insurance companies don’t settle, there will be plenty of testifying to do later in a civil trial for damages. Traffic court is not the place to hash this out.
No. Don’t show up in court unless you are served with a subpoena.
Yes, if the lawyer asks you whether you committed any crimes such as driving with a burned out headlight, you can take the fifth. If the judge disagrees, he will tell you so.