How can you identify a driver under the influence?

Erratic behavior is a key indicator that someone may be under the influence of drugs or alcohol. Drivers exhibiting erratic behavior may demonstrate a lack of coordination, impaired judgment, and unpredictable movements on the road. This can manifest in various ways, such as sudden acceleration or deceleration, weaving in and out of lanes, or not responding adequately to traffic signals and signs. Such behaviors are often critical signs that the driver’s ability to operate the vehicle safely is compromised.

In contrast, a calm demeanor typically suggests that a driver is in control and not exhibiting signs of impairment. Consistent lane position indicates proper driving skills and awareness of road surroundings, both of which are generally associated with a sober individual. Excessive speed, while dangerous, can have various causes and is not a definitive indicator of being under the influence; it may simply reflect reckless driving rather than impairment from substances.