What are the signs of a driver under the influence?

A driver under the influence often exhibits noticeable signs that can indicate impairment. Weaving between lanes, making sudden stops, and displaying erratic driving patterns are key indicators of a lack of control and impaired decision-making skills. These behaviors suggest that the driver may have difficulty maintaining a straight path, judging distances accurately, and responding appropriately to changing traffic conditions.

In contrast, consistent speed and smooth turns typically reflect a driver who is focused and in control, rather than impaired. Frequent lane changes without signaling may indicate recklessness or distraction but do not specifically signal influence, as many drivers may change lanes for legitimate reasons. Lastly, driving below the speed limit, while potentially indicative of caution or fear, does not necessarily correlate with being under the influence and can be due to other factors such as unfamiliarity with the road or weather conditions. Therefore, the erratic behaviors described are the most definitive signs of impairment.