A person under 17 years of age may not waive the right to the assistance of counsel in his or her defense in any judicial proceeding. This Section does not apply to a minor charged with an offense for which the penalty is a fine only. Except for violations of Sections 11-401, 11-402, 11-501, and 11-503 of the Illinois Vehicle Code, this Section does not apply to proceedings involving violations of the Illinois Vehicle Code.