There is no fixed timeframe that guarantees safety, because THC affects people differently and metabolites can linger after effects fade. Mississippi law focuses on impairment at the time of driving, not simply the presence of THC or metabolites. Officers may rely on observations and field exercises, and prosecutors may add lab results if obtained. The longer the gap between use and driving, the harder it often becomes for the state to show real-time impairment, but timing alone is not determinative. If charged, a defense can highlight normal driving, clear communication, and acceptable performance on video to show you were not impaired. Lab results are examined for reliability, timing, and whether they reflect your condition while driving. Context matters, including sleep, medical conditions, stress, and environment. Because each situation is unique, early consultation helps preserve evidence, assess risk, and plan a strategy that aligns with your goals and Mississippi procedures.