Section 397-A. Radar detectors and laser detectors prohibited

1. No radar
  detector or laser detector shall be used in any  motor  vehicle  with  a
  gross  vehicle weight rating of more than eighteen thousand pounds or in
  any commercial vehicle with a gross vehicle weight rating of  more  than
  ten  thousand pounds.   The presence in such vehicle of a radar detector
  or laser detector connected  to  a  power  source  and  in  an  operable
  condition  is  presumptive  evidence  of its use by any person operating
  such vehicle.  Such presumption shall be rebutted by  any  credible  and
  reliable  evidence which tends to show that such radar detector or laser
  detector was not in use.
    2.  The  provisions  of  this  section  shall  not  be  construed   as
  authorizing  the  seizure  or  forfeiture  of  a radar detector or laser
  detector, unless otherwise provided by law.
    3. A violation of the provisions of this section  shall  constitute  a
  traffic infraction punishable by a fine of not less than twenty-five nor
  more than one hundred dollars.