Mississippi Code — Title 63—Motor Vehicles and Traffic Section11 Implied Consent Law
Section 63-11-30
(1) It is unlawful for any person to drive or otherwise operate a vehicle in this state who: …
(b) is under the influence of any other [than alcohol] substance which has impaired such person’s ability to operate a motor vehicle;
…
(d) is under the influence of any drug or controlled substance, the possession of which is unlawful under the Mississippi Controlled Substances Law…
Type of Drugs Prohibited:
Any substance other than intoxicating liquor that causes impairment, any illegal drug or controlled substance
Marijuana use in vehicle
Mississippi does not allow the recreational or medicinal use of marijuana.
Reference: Drugged Driving: 2016 Summary of Key Provisions of State Laws