MI HB4093

Prohibits operating a vehicle while intoxicated, defined as being under the influence of alcohol, controlled substances, or intoxicating substances, or having an alcohol content of 0.08 grams or more per 100 milliliters of blood, per 210 liters of breath, or per 67 milliliters of urine.

Establishes enhanced penalties for operating while intoxicated causing death (up to 15 years imprisonment or $2,500-$10,000 fine) or serious bodily impairment (up to 5 years imprisonment or $1,000-$5,000 fine).

Sets stricter standards for drivers under 21 years of age, prohibiting any bodily alcohol content of 0.02 grams or more per 100 milliliters of blood, per 210 liters of breath, or per 67 milliliters of urine.

Authorizes peace officers to conduct preliminary chemical breath analysis and arrest without warrant for suspected intoxicated driving; provides procedures for chemical testing with results admissible as evidence.

Prohibits operating a commercial motor vehicle with alcohol content of 0.04 grams or more per 100 milliliters of blood, per 210 liters of breath, or per 67 milliliters of urine, with penalties up to 5 years imprisonment for violations with prior convictions.