Mo. Rev. Stat. § 302.454
The court shall require the use of a certified ignition interlock device during the period of probation if the person is permitted to operate a motor vehicle, whether the privilege to operate a motor vehicle is restricted or not, as determined by the court.
(L. 1995 S.B. 102 § 3, A.L. 2014 S.B. 491)
Transferred 2014; formerly 577.604; Effective 1-01-17