(a) On and after July 1, 1992, no hand-held radar device that emits nonionizing radiation may be used in this state by any state or municipal police officer in the course of his employment for the purpose of preventing or detecting any violation of any law relating to motor vehicles.

(b) On and after July 1, 1992, no speed monitoring radar device that emits nonionizing radiation may be used within the confines of a patrol vehicle by any state or municipal police officer in the course of his employment for the purpose of preventing or detecting any violation of any law relating to motor vehicles.