The bill amends the Michigan Vehicle Code to enhance the authority of peace officers in conducting arrests and chemical tests for suspected alcohol and controlled substance violations. Key updates include the introduction of preliminary oral fluid analysis as an additional tool alongside the existing preliminary chemical breath analysis, allowing results from either test to be used as evidence in criminal prosecutions. The bill also replaces gender-specific terms with gender-neutral language, clarifies the admissibility of test results in court, and outlines the responsibilities of individuals who refuse to submit to these tests. New provisions are established for the handling of chemical testing, including the protection of personally identifying information by private entities conducting oral fluid tests and the requirement for the Department of State Police to create uniform rules for administering these tests.

Additionally, the bill specifies that individuals with certain medical conditions, such as hemophilia or diabetes, are not considered to have consented to blood withdrawal. It updates the language regarding the administration of tests to state that tests "must" be administered instead of "shall." The bill clarifies procedures for peace officers when a person refuses a chemical test or when test results are pending, including the immediate confiscation of the individual's driver's license and the issuance of a temporary license. It also defines terms related to controlled substances and intoxicating substances, providing specific thresholds for different categories of individuals. The enactment of this bill is contingent upon the passage of House Bill No. 4390 and will take effect 90 days after being enacted into law.

Statutes affected:
Substitute (H-2): 257.625
House Introduced Bill: 257.625
As Passed by the House: 257.625