COURT OF APPEALS

DECISION

DATED AND FILED

NOTICE

July 15, 1999

This opinion is subject to further editing. If published, the official version will appear in the bound volume of the Official Reports.

Marilyn L. Graves

Clerk, Court of Appeals

of Wisconsin

A party may file with the Supreme Court a petition to review an adverse decision by the Court of Appeals. See § 808.10 and Rule 809.62, Stats.

[I]t is entirely appropriate for the jury to consider the defendant's ability to perform the simple physical tasks which comprise the field-sobriety tests. The jury's inference that a defendant who had difficulty performing some of these tasks may have been similarly impaired in his ability to think and act with ordinary care when in operation of an automobile is entirely justified and one which the law permits the jury to draw.

Certainly in our modern society, a juror's common observations and experiences in life would include not only the driving of an automobile, but a familiarity with the degree of physical and mental acuity required to do so. No expert testimony is needed nor is a showing of scientific principles required before a jury can be permitted to conclude that a person who performs badly on the field-sobriety tests may have his mental or physical faculties "so impaired as to reduce his ability to think and act with ordinary care."

Id. at 779-80 (quoting Illinois Pattern Jury Instruction, Criminal, No. 23.05 (2d ed. Supp. 1989)). The Illinois court decided that the effects of intoxication are so well known to lay persons that evidence does not need to be submitted to determine the reliability or validity of field sobriety tests.

There are objective components of the field sobriety exercises, which are commonly understood and easily determined, such as whether a foot is on a line or not. Jurors do not require any special expertise to interpret performance of these tasks. Thus, evidence of the police officer's observations of the results of defendant's performing the walk-and-turn test, . should be treated no differently than testimony of lay witnesses . concerning their observations about the driver's conduct and appearance.

Id. at 831. The Florida court determined that since lay persons are allowed to testify as to their own perception of someone's intoxication, a police officer, who suspects that a person has been operating a motor vehicle while intoxicated, should likewise be able to testify as to their own perception of the defendant's intoxication.

1 This appeal is decided by one judge pursuant to §752.31(2)(g), Stats.