§ 27.07 Pleas by mail. A defendant charged with a violation of any provision of this chapter or rule, regulation, local law or ordinance promulgated or adopted thereunder may himself plead guilty to the charge in open court. He may also submit to the magistrate having jurisdiction, in person, by duly authorized agent, or by registered mail, a statement (a) that he waives arraignment in open court and the aid of counsel, (b) that he pleads guilty to the offense as charged, (c) that he elects and requests that the charge be disposed of and the fine or penalty fixed by the court, (d) of any explanation that he desires to make concerning the offense charged, and (e) that he makes all statements under penalty of perjury. Thereupon the magistrate may proceed as though the defendant has been convicted upon a plea of guilty in open court, provided however, that any imposition of fine or penalty hereunder shall be deemed tentative until such fine or penalty shall have been paid and discharged in full. If upon receipt of the aforesaid statement the magistrate shall deny the same, he shall thereupon notify the defendant of this fact, and that he is required to appear before the said magistrate at a stated time and place to answer the charge which shall thereafter be disposed of pursuant to the applicable provisions of law.