What is one indicator of a driver under the influence of alcohol?

A driver under the influence of alcohol often exhibits erratic driving behavior or swerving, which is a clear sign of impairment. This behavior can include weaving within the lane, failing to remain in designated traffic lanes, and difficulty in maintaining a consistent path on the road. Alcohol impacts coordination, judgment, and reaction times, leading to unpredictable driving patterns that can endanger the driver and others on the road. Such erratic movements are strongly associated with intoxication, making it a key indicator for law enforcement and other road users to recognize potential impaired driving.

In contrast, maintaining consistent speed, frequently using turn signals, and perfect lane keeping are behaviors typically associated with attentive and sober driving. These actions do not suggest impairment and are indicative of a driver who is in control of their vehicle and aware of their surroundings.