Wisconsin Statutes Vehicles (Ch. 340 to 351) § 345.34. Arraignment; pleas

(1) If the defendant appears in response to a citation, or is arrested and brought before a court with jurisdiction to try the case, the defendant shall be informed that he or she is entitled to a jury trial. The defendant may plead guilty, not guilty, or no contest.If the defendant requests a continuance at the initial appearance, the court shall adjourn the arraignment without entering any plea.

(2) If the defendant pleads guilty or no contest, the court shall accept the plea, find the defendant guilty and proceed under s. 345.47.

(3) If a summons is served or citation is issued by a police officer for a violation of any municipal ordinance or of chs. 194 or 340 to 348 and 350, the defendant may enter a plea of not guilty based on such summons or citation by letter to the judge at the address indicated on the summons or citation, the letter to show the defendant's return address. The letter may include a request for trial during normal daytime business hours. Upon receipt of the letter, the judge shall reply by mail to the defendant's address setting forth a time and place for trial, the time to be during normal business hours if requested by the defendant. The date of the trial shall be at least 10 days from the mailing by the judge. Nothing in this subsection forbids the setting of the trial at any time convenient to all parties concerned.