According to the inquiry of Fatu. com, what the defendant should do before the traffic accident court opens: the defendant should submit a defense, which should record the defendant's name, gender, age, nationality, occupation, work unit, residence and contact information; The name and domicile of the legal person or other organization and the name, position and contact information of the legal representative or principal responsible person. The people's court shall send a copy of the defense to the plaintiff within five days from the date of receiving the defense. Therefore, the signature of the defendant is not required.