Any commissioner or traffic referee of such court may exercise all of the powers and duties provided for in this article for the clerk relating to bail and the discharge of defendants under bail, and the authority to fix the amount of bail in cases of misdemeanor defined in the Vehicle Code and to endorse it upon the notice for the appearance of the defendant as provided by Section 40511 of the Vehicle Code. Nothing in this article shall be construed to reduce or limit the powers or authority of such commissioners or traffic referees otherwise provided by law.