§ 12-3408.  Defenses to Liability.
   (1)   No vehicle owner shall be liable pursuant to this Chapter if he or she has been issued a violation notice pursuant to Section 3362 of the Vehicle Code for the same incident of conduct.
   (2)   It shall be a defense to a violation under this Chapter that:
      (a)   the person receiving the notice of violation was not the owner of the vehicle at the time of the offense;
      (b)   the person named in the notice of the violation was not operating the vehicle at the time of the violation, based on the submission of evidence. To raise such a defense, the owner is not required to disclose the identity of the operator of the vehicle at the time of the violation;
      (c)   the vehicle was reported stolen to a state or municipal police department prior to the time the violation occurred and was not recovered before the violation; or
      (d)   the device being used to determine speed was not in compliance with Section 3368 of the Vehicle Code (relating to speed timing devices) with respect to testing for accuracy, certification or calibration.