Once he said that he did not know the error of the machine you should have stopped that line of questioning. Calibration certificate was entered into evidence w/o any objection I assume, big mistake. You did not ask followup questions to his training - you let his answer stand so the judge will think he is trained well on the equipment. You cannot allow the certificate of calibration to be introduced ; you cannot allow his training to be allowed in w/o a good cross. You did not show that he did not know how to use the RADAR unit, the judge was correct on all his points. The cop just needs to be trained in the use of the RADAR unit & the RADAR unit must be calibrated. If you want to talk the inaccuracies of the technology, you'll need an expert. A poor cross IMO.

