The proposed bill aims to enhance Montana's driving under the influence (DUI) laws by introducing a new category of offenses for both noncommercial and commercial drivers who test positive for specific prohibited substances, including amphetamines, cocaine, heroin, and fentanyl. It amends the Montana Code Annotated (MCA) by removing the phrase "or other bodily substance" from existing DUI definitions and establishing new definitions and threshold levels for these substances. The bill also sets new standards for evidence admissibility in DUI cases and clarifies the definitions of "under the influence" and "aggravated driving under the influence," thereby expanding the scope of offenses that could lead to enhanced penalties.

In addition to stricter penalties for DUI violations, particularly when minors are present, the bill mandates that all defendants complete a chemical dependency assessment and participate in treatment programs based on their number of prior convictions. It specifies that treatment programs must be evidence-based and provided by licensed addiction counselors, with defendants responsible for associated costs. The bill also clarifies the definition of "conviction" for DUI offenses, streamlining the criteria for determining prior offenses, and emphasizes that courts can impose suspended sentences for up to one year when treatment is ordered. Overall, the legislation seeks to improve public safety by imposing tougher penalties and promoting rehabilitation for individuals convicted of DUI offenses.

Statutes affected:
LC Text: 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_1(1): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_1(2): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_1(3): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_1(4): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_1: 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(1): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(10): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(11): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(12): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(13): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(2): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(3): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(4): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(5): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(6): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(7): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(8): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2(9): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_2: 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(1): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(2): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(3): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(4): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(5): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(6): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(7): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(8): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3(9): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_3: 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(1): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(2): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(3): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(4): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(5): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(6): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X(7): 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011
HB0344_X: 23-2-535, 61-2-302, 61-5-212, 61-5-231, 61-8-805, 61-8-1001, 61-8-1002, 61-8-1007, 61-8-1008, 61-8-1009, 61-8-1011