DUI sobriety checkpoints are commonly used by police agencies to apprehend drunk drivers in southern California. If a driver’s speech sounds slurred or breath smells of alcohol, the driver will be asked to submit to a field sobriety test. In 1990, the United States Supreme Court affirmed the constitutionality of driving under the influence sobriety checks. In Michigan Department of State Police v. Sitz, the Court found that checkpoints do not violate the Fourth Amendment’s protection against unreasonable searches and seizures.
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