I recently got a speeding ticket which I am contesting. At the time I asked the officer if he could giving me any information on the equipment he used to determine I was speeding and he could not tell me anything regarding what equipment he used or how it worked. In researching I found the case Kelly v. State which rules the officer must also be able to explain the theory underlying the gun's speed calculation. How do I cite this to the judge when I am in court? Do I need a copy of the case,? can I just reference it? I have no idea how it works.