A marijuana DUI in Jackson is alleged when an officer believes a driver operated a vehicle while impaired by marijuana to the degree that safe operation was affected. The state looks at observable signs, field sobriety test performance, and any chemical test results to support impairment claims. Because marijuana metabolites can remain in the body beyond the period of impairment, the mere presence of metabolites does not automatically prove current impairment. Each case depends on the particular facts, the timing of observations and tests, and how the state interprets those indicators in court. To defend against such a charge, attorneys examine the legality of the initial stop, the observation timeline, the administration of any roadside tests, and the handling of chemical samples. Discrepancies in police reports, procedural errors, or unreliable testing methods can all be contested. In Jackson, local court practices and how evidence is recorded are also important to consider when evaluating whether the state can meet its burden to prove impairment beyond a reasonable doubt.