What is one sign of a potentially drunk driver?

Erratic movements and swerving within the lane often indicate that a driver may be impaired. When someone's ability to focus and control their vehicle is compromised—whether due to alcohol or other substances—it can lead to unsteady handling, such as drifting in and out of lanes or making sudden movements. This behavior is a significant warning sign of potentially risky driving and highlights the importance of vigilance on the road.

Driving at the speed limit or consistently using turn signals are behaviors that suggest a driver may be responsible and aware, rather than impaired. Maintaining a steady path also reflects sound driving practices. These actions do not typically align with the erratic behavior seen in impaired drivers, making them less indicative of potential intoxication.