What is a common sign that a driver may be impaired?

A common sign that a driver may be impaired is the presence of sudden stops, swerving, or inconsistent speeds. These behaviors are indicative of a lack of coordination, diminished reaction time, or impaired judgment, which are often associated with alcohol or drug use. Impaired drivers may struggle to maintain a steady speed, frequently drift out of their lane, or make abrupt stops, reflecting an inability to control the vehicle effectively. Recognizing these signs is crucial for other drivers on the road, as it can help prevent accidents by prompting them to take precautionary measures, such as keeping a safe distance or reporting the erratic driving behavior. In contrast, consistent speed and lane-keeping, correct use of turn signals, and frequent stops at red lights suggest that a driver is likely attentive and operating their vehicle responsibly.