RANKIN COUNTY, Miss. – The Rankin County Prosecutor’s Office has reported an increase in DUI cases involving marijuana. With the implementation of Mississippi’s medical cannabis program, it is crucial for the public to understand how state law applies to driving after using marijuana or other controlled substances.
DUI Laws and Marijuana
Mississippi law prohibits operating a motor vehicle while under the influence of any drug or controlled substance, including marijuana. There is a common misconception that DUI laws apply only to alcohol or that a specific THC level must be reached to warrant a marijuana DUI. However, Mississippi law defines a person as “under the influence” if a substance impairs their normal ability to operate a vehicle.
Evaluating Impairment in Marijuana DUI Cases
Officials state that impairment in marijuana DUI cases is evaluated based on the “totality of the circumstances.” Factors considered may include:
- Driving behavior observed by law enforcement
- Physical indicators like bloodshot eyes and slowed reactions
- Statements made by the driver
- Field sobriety testing
- The odor or presence of marijuana
- Toxicology testing, when available
Mississippi courts have affirmed that these observations can establish whether a driver was impaired by marijuana.
Toxicology Tests and Their Limitations
Toxicology testing, such as urinalysis, can confirm marijuana exposure but does not indicate when the substance was consumed or whether a driver was impaired at that time. Thus, officer observations and corroborative evidence remain essential in these cases.
Impact of the Mississippi Medical Cannabis Act
The Mississippi Medical Cannabis Act does not permit driving while impaired. State law specifically maintains that DUI regulations remain in effect for individuals using marijuana for medical purposes if it affects their ability to drive safely. This principle also extends to many prescription medications that may impair driving capability.
A Message for Drivers
The Rankin County Prosecutor’s Office stresses that driving under the influence of any substance endangers all road users. If you choose to use marijuana, whether legally in Mississippi or elsewhere, please avoid driving while under its influence. Rankin County Prosecuting Attorney Trey Spillman emphasized, “Public safety on our roadways depends on it.”