SCOTT, J.
The issue in this case is whether the prosecutor was required to prove compliance with certain administrative code procedures as foundation for the introduction into evidence of the results of a breathalyzer test. The trial court held that compliance with all administrative! code procedures was not required for test results to be admitted, and we affirm.
This case came to this court Ss a one-judge appeal from a conviction for violation of an ordinance. This court was aware that the issue raised on appeal has been raised repeatedly in various trial courts throughout the state, and, therefore, it was determined that the case warranted a decision by a three-judge panel and a recommendation for publication of the opinion.
An order that the appeal be heard by a three-judge panel was entered pursuant to sec. 809.41 (3), Stats.
Alfred Wertz was involved in an automobile accident on November 11, 1979 in New Berlin, Wisconsin. The investigating police officer observed that there was an odor of intoxicants on Wertz’ breath, that Wertz slurred
his speech and that Wertz swayed when he walked. He arrested Wertz and issued a citation to him for violation of a City of New Berlin ordinance adopting sec. 346.63 (1), Stats., driving while under the influence of an intoxicant. At the police station, Wertz was requested to take a breathalyzer test. Wertz consented, and the test was administered. The test results showed .18% alcohol in his blood by weight. Wertz entered a not guilty plea and demanded a trial by jury. Counsel for Wertz made no demand for discovery pursuant to sec. 345.421, Stats.
The case was tried to a jury on March 9, 1981. Just prior to trial, Wertz moved to suppress the breathalyzer test results on the grounds that the testing procedures and methods did not meet certain administrative code requirements.
The trial court held that the City is not required to prove strict compliance with all of the administrative code procedures and admitted the test results. However, the court required certain foundation evidence as to the accuracy of the test prior to the admission of the test results. Wertz was found guilty of operating a motor vehicle while under the influence of an intoxicant, and j udgment was entered.
On appeal, Wertz contends that the trial court committed error by not requiring proof of compliance with certain sections of the administrative code as a founda
tional prerequisite to the admission of the results of the breathalyzer test. Our examination of the relevant statutes and cases convinces us that Wertz’ contention is not correct.
By statute, a law enforcement officer who arrests a person and issues a citation for driving while under the influence of an intoxicant may request the driver to provide a breath, blood or urine sample for testing. Sec. 343.305 (2) (b), Stats. The results of the tests are admissible into evidence at a trial on the charge of operating a motor vehicle while under the influence. Section 343.305 (7), Stats., reads as follows:
At the trial of any civil or criminal action or proceeding arising out of the acts committed by a person alleged to have been driving or operating a motor vehicle while under the influence of an intoxicant or a controlled substance, the results of a test administered under sub. (2) (b) or (c) or (5) are admissible on the issue of whether the person was under the influence of an intoxicant or a controlled substance. Test results shall be given the effect required under s. 885.235 and, if applicable, s. 346.63 (4).
Section 343.305(7), Stats., places no conditions on the admissibility of the results of a breathalyzer test.
Under Wisconsin case law, breathalyzer tests carry a “prima facie presumption of accuracy,” and the question of how accurately the test was performed goes to the weight to be given to the test, not to its admissibility.
[T]ests by recognized methods need not be proved for reliability in every case of violation. Examples, speedometer, breathalyzer, radar. [Citations omitted.] These methods of measurement carry a prima facie presumption of accuracy. Whether the test was properly conducted or the instruments used were in good working order is a matter of defense. The administration of law would be seriously frustrated if validity of basic and everyday accepted tests had to be a matter of evidence in every case in the first instance.
State v. Trailer Service, Inc.,
61 Wis. 2d 400, 408, 212 N.W.2d 683, 688-89 (1973).
In a recent decision, this court relied on the holding of
Trailer Service
to conclude that a “prima facie presumption of accuracy applied” to stationary radar and that “the state is not required to affirmatively prove accuracy and reliability” of stationary radar units.
City of Wauwatosa v. Collett,
99 Wis. 2d 522, 524, 299 N.W.2d 620, 621 (Ct. App. 1980). We conclude that under
Trailer Service
breathalyzer tests are entitled to that same “presumption of accuracy.” The State is not required to affirmatively prove compliance with administrative code procedures as a foundation for the admission of a breathalyzer test.
Our holding should not be construed as a limitation on the power of the trial court to exercise control over the receipt of evidence under sec. 906.11(1), Stats.
Courts
may be faced with factual situations where there are no legislatively imposed foundational prerequisites but where the court properly refuses to admit the test.
A situation may arise where the party objecting to the admissibility of the breathalyzer test convinces the court that the accuracy of the test is so questionable that its results are not probative and, therefore, not admissible as relevant evidence under sec. 904.01, Stats. Or the court may, in some cases, conclude that accuracy of the test is so questionable that its probative value is outweighed by its prejudicial effect. Sec. 904.03, Stats. The latter may be especially important in light of the presumptions contained in sec. 885.235, Stats.,
and the recent amendments to sec. 346.63, Stats.
The trial courts may also refuse to admit breathalyzer test results unless the requirement of relevancy under sec. 904.01, Stats., and the requirement of authentication under sec. 909.01, Stats., have been met. The question of authenticity is preliminary to the question of admissibility.
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SCOTT, J.
The issue in this case is whether the prosecutor was required to prove compliance with certain administrative code procedures as foundation for the introduction into evidence of the results of a breathalyzer test. The trial court held that compliance with all administrative! code procedures was not required for test results to be admitted, and we affirm.
This case came to this court Ss a one-judge appeal from a conviction for violation of an ordinance. This court was aware that the issue raised on appeal has been raised repeatedly in various trial courts throughout the state, and, therefore, it was determined that the case warranted a decision by a three-judge panel and a recommendation for publication of the opinion.
An order that the appeal be heard by a three-judge panel was entered pursuant to sec. 809.41 (3), Stats.
Alfred Wertz was involved in an automobile accident on November 11, 1979 in New Berlin, Wisconsin. The investigating police officer observed that there was an odor of intoxicants on Wertz’ breath, that Wertz slurred
his speech and that Wertz swayed when he walked. He arrested Wertz and issued a citation to him for violation of a City of New Berlin ordinance adopting sec. 346.63 (1), Stats., driving while under the influence of an intoxicant. At the police station, Wertz was requested to take a breathalyzer test. Wertz consented, and the test was administered. The test results showed .18% alcohol in his blood by weight. Wertz entered a not guilty plea and demanded a trial by jury. Counsel for Wertz made no demand for discovery pursuant to sec. 345.421, Stats.
The case was tried to a jury on March 9, 1981. Just prior to trial, Wertz moved to suppress the breathalyzer test results on the grounds that the testing procedures and methods did not meet certain administrative code requirements.
The trial court held that the City is not required to prove strict compliance with all of the administrative code procedures and admitted the test results. However, the court required certain foundation evidence as to the accuracy of the test prior to the admission of the test results. Wertz was found guilty of operating a motor vehicle while under the influence of an intoxicant, and j udgment was entered.
On appeal, Wertz contends that the trial court committed error by not requiring proof of compliance with certain sections of the administrative code as a founda
tional prerequisite to the admission of the results of the breathalyzer test. Our examination of the relevant statutes and cases convinces us that Wertz’ contention is not correct.
By statute, a law enforcement officer who arrests a person and issues a citation for driving while under the influence of an intoxicant may request the driver to provide a breath, blood or urine sample for testing. Sec. 343.305 (2) (b), Stats. The results of the tests are admissible into evidence at a trial on the charge of operating a motor vehicle while under the influence. Section 343.305 (7), Stats., reads as follows:
At the trial of any civil or criminal action or proceeding arising out of the acts committed by a person alleged to have been driving or operating a motor vehicle while under the influence of an intoxicant or a controlled substance, the results of a test administered under sub. (2) (b) or (c) or (5) are admissible on the issue of whether the person was under the influence of an intoxicant or a controlled substance. Test results shall be given the effect required under s. 885.235 and, if applicable, s. 346.63 (4).
Section 343.305(7), Stats., places no conditions on the admissibility of the results of a breathalyzer test.
Under Wisconsin case law, breathalyzer tests carry a “prima facie presumption of accuracy,” and the question of how accurately the test was performed goes to the weight to be given to the test, not to its admissibility.
[T]ests by recognized methods need not be proved for reliability in every case of violation. Examples, speedometer, breathalyzer, radar. [Citations omitted.] These methods of measurement carry a prima facie presumption of accuracy. Whether the test was properly conducted or the instruments used were in good working order is a matter of defense. The administration of law would be seriously frustrated if validity of basic and everyday accepted tests had to be a matter of evidence in every case in the first instance.
State v. Trailer Service, Inc.,
61 Wis. 2d 400, 408, 212 N.W.2d 683, 688-89 (1973).
In a recent decision, this court relied on the holding of
Trailer Service
to conclude that a “prima facie presumption of accuracy applied” to stationary radar and that “the state is not required to affirmatively prove accuracy and reliability” of stationary radar units.
City of Wauwatosa v. Collett,
99 Wis. 2d 522, 524, 299 N.W.2d 620, 621 (Ct. App. 1980). We conclude that under
Trailer Service
breathalyzer tests are entitled to that same “presumption of accuracy.” The State is not required to affirmatively prove compliance with administrative code procedures as a foundation for the admission of a breathalyzer test.
Our holding should not be construed as a limitation on the power of the trial court to exercise control over the receipt of evidence under sec. 906.11(1), Stats.
Courts
may be faced with factual situations where there are no legislatively imposed foundational prerequisites but where the court properly refuses to admit the test.
A situation may arise where the party objecting to the admissibility of the breathalyzer test convinces the court that the accuracy of the test is so questionable that its results are not probative and, therefore, not admissible as relevant evidence under sec. 904.01, Stats. Or the court may, in some cases, conclude that accuracy of the test is so questionable that its probative value is outweighed by its prejudicial effect. Sec. 904.03, Stats. The latter may be especially important in light of the presumptions contained in sec. 885.235, Stats.,
and the recent amendments to sec. 346.63, Stats.
The trial courts may also refuse to admit breathalyzer test results unless the requirement of relevancy under sec. 904.01, Stats., and the requirement of authentication under sec. 909.01, Stats., have been met. The question of authenticity is preliminary to the question of admissibility. Authenticity is a condition precedent to admissibility and is satisfied by the proponent of evidence showing sufficient proof to the court to support a finding by the court “that the matter in question is what its proponent claims.” Sec. 909.01, Stats. Once the court is satisfied that, in fact, a breathalyzer test was run on a sample of the defendant’s breath, the requirement of authenticity has been satisfied.
In ruling on admissibility of breathalyzer test results, trial courts must also consider whether there has been compliance with the time limitation and/or the requirement of expert testimony under sec. 885.285(1), Stats.
In the instant case, Wertz does not challenge the authenticity or relevancy of the breathalyzer test, nor does he raise any issue as to compliance with the time limitation of sec. 885.235, Stats. Our examination of the record reveals an abundance of evidence demonstrating the probable accuracy of the breathalyzer test.
The prima
facie presumption of accuracy of the test was not overcome. Therefore, Wertz’ claimed noncompliance with certain provisions of the code goes only to the weight, not to the admissibility, of the breathalyzer test. The trial court allowed Wertz a complete and detailed cross-examination of all witnesses, including the breathalyzer operator. Counsel for Wertz produced testimony on the alleged lack of continual or constant observation of Wertz and the alleged insufficiency of certain certificates regarding the test ampoules. The jury was afforded the opportunity to weigh any of the alleged failures to conform with the various Motor Vehicle Department standards and procedures in determining the weight the jury would accord the breathalyzer test results.
Wertz’ final argument is that he is entitled to a new trial in the interests of justice. The thrust of his final argument is that the failure of the trial court to suppress the breathalyzer test resulted in prejudicial error. Having concluded that the breathalyzer test was properly received into evidence, we find no merit in Wertz’ position.
By the Court.
— Judgment affirmed.