State v. Cahill

The respondent contends that his conviction on a speeding charge was either determined by, or heavily influenced by, evidence based on the operation of a radar speed-measuring device. It is not the court’s general recognition of the theory of measurement of speed by radar electronics to which he objects. Rather, he seeks to raise more specific questions relating to foundations for the admission of such scientific evidence, and the appropriate range of examination as to proper calibration and operation of the equipment by personnel whose qualifications should be proven. The kind of issues…