A hearing held for the purpose of allowing a person to explain mitigating circumstances surrounding the commission of an infraction shall be an informal proceeding. The person named in the notice may not subpoena witnesses. The determination that the infraction has been committed may not be contested at a hearing held for the purpose of explaining circumstances. After the court has heard the explanation of the circumstances surrounding the commission of the infraction, an appropriate order shall be entered in the court's record. A copy of the order shall be furnished to the director. There may be no appeal from the court's determination or order.