State v. PrimmState v. Primm
This is аn appeal from defendant’s conviction by a jury of speeding in violation of
The sole issue on appeal is whether the trial court erred in denying defendant’s motion fоr acquittal which was made at the conclusion of the State’s evidence. Defendant contends the State’s case was defective in that no expert testimony was аdduced as to the construction or method of operation of the radar utilized.
The sole witness appearing at trial was Highway Patrolman Terry J. Affholder. Trooper Affholder testified that on October 3, 1978, he was proceeding in his patrol car toward defendant’s oncoming vehicle in Osage County. The patrol car was equipped with a KR11 radar unit which showed defendant’s speed at 66
At trial, Affholder conceded he was not an expert with regard to the internal mechanisms of the radar unit, but that he had received training as to the machine and was a certified operator. Affholder explained tests hе performed on the machine that were designed to test its accuracy. These tests included internal calibrations and checks with two different tuning forks. Affholder stated he pеrformed these tests prior to his arrest of defendant, that he showed defendant the speed which the machine registered at the time of the arrest, and checked the unit аgain at the end of his work shift. All tests indicated the radar was functioning properly. He did not verify the speed of his own vehicle by any means other than the internal calibration of thе radar machine. Affholder did not give his opinion of the speed of defendant’s vehicle based on his visual observation.
At the close of the State’s evidence, defendant made a motion for judgment of acquittal. The trial court overruled the motion, taking judicial notice of the reliability of radar generally and finding that no expert testimony was required as to the internal workings and principles involved. The jury found defendant guilty as charged and this appeal resulted.
The question presented here has not been previоusly addressed by our courts. Cases from other jurisdictions, however, have consistently held that evidence of the accuracy of the radar unit is necessary to sustain a conviction for speeding obtained solely by radar. Evidence of accuracy generally is a
prerequisite
to the admissibility of evidence of speed obtained by the use of a radar device. See
Everight v. City of Little Rock,
The accuracy of a particular radar unit can be established by showing that the officer tested the device in accordance with acсepted procedures.
People v. Burch,
It is also generally required that proof be offered that the operator of the radar unit is qualified to operate the radar device. The cases agree that the officer need not be an expert in the science or theory underlying the functions of the instrument. See
People v. Stankovich,
Defendant’s main complaint is that the State should be required to present expert testimоny regarding the construction and method of operation of the radar in order to demonstrate that the device can accurately measure speed. The great majority of cases have held that judicial notice may be taken of the general reliability of radar to measure the speed of motor vehicles. See cases cited in Annot.,
Two cases following
Wilcox
merit a brief discussion. In
State v. Shelt,
Following
Shelt,
the Wisconsin Supreme Court considered the issue in
State v. Hanson,
“The court takes this opportunity to establish guidelines for the prosecution of speeding citations issued on the basis of a moving speеd radar device. The courts of this state may take judicial notice of the reliability of the underlying principles of speed radar detection that employs the Doppler effect as a means of determining the speed of moving objects. To this end, expert testimony is not needed to determine the initial admissibility of speed radar readings. The radar reading may be introduced by the operating law enforcement official, if he is qualified in its use and operation.
“The accuracy of any speed radar device is another matter. The accuracy of the most indisputable scientific theory is subject to its application in particular conditions. The application of any virtually undisputed scientific fact to the immediate surrounding conditions must be explained in ascertaining its accuracy.”85 Wis. 2d at 244-45 .
The foundation evidence Wisconsin required in
Hanson
is unnecessary under the facts of this case for the reason that in
Hanson
evidence was presented that the machine did not give an accurate reading under certain circumstances. Foundation requirements were sеt to eliminate the possibility of error. In the case before us, we are considering a different, newer unit than
Affirmed.