Barker v. Iowa Department of Transportation, Motor Vehicle Department

HARRIS, Justice.

The district court reversed an administrative driver’s license revocation order, declaring invalid the department’s regulation upon which it was based. Although we do so by way of a different analysis, we agree with the conclusion of the district court and affirm.

When arrested for operating while intoxicated, Barker submitted to a breath test on an Intoxilyzer 4011A. The test indicated a blood alcohol content of .108%. The margin of error in the test was crucial because *349an operator’s license can be revoked for persons who operate a motor vehicle at a time when their alcohol…