Versions of See prior versions of a law on LawServer 2024 Missouri Laws 577.612 – Tampering with or circumventing the operation of an interlock device — penalty 2023 Missouri Laws 577.612 – Tampering with or circumventing the operation of an interlock device — penalty 2022 Missouri Laws 577.612 – Tampering with or circumventing the operation of an interlock device — penalty. 2020 Missouri Laws 577.612 – Tampering with or circumventing the operation of an interlock device — penalty. 2018 Missouri Laws 577.612 – Tampering with or circumventing the operation of an interlock device — penalty. 2016 Missouri Laws 577.612 – Beginning January 1, 2017–Tampering with or circumventing the operation of an interlock device–penalty 2015 Missouri Laws 577.612 – Beginning January 1, 2017–Tampering with or circumventing the operation of an interlock device–penalty 2015 Missouri Laws 577.612 – Until December 31, 2016–Circumvention of operation–prohibited activities–penalty 2014 Missouri Laws 577.612 – Beginning January 1, 2017–Tampering with or circumventing the operation of an interlock device–penalty 2014 Missouri Laws 577.612 – Until December 31, 2016–Circumvention of operation–prohibited activities–penalty 2013 Missouri Laws 577.612 – Circumvention of operation–prohibited activities–penalty 2009 Missouri Laws 577.612 – Circumvention of operation–prohibited activities–penalty