What physical signs might indicate a driver is under the influence?

The presence of slurred speech, bloodshot eyes, and poor coordination are widely recognized physical signs that indicate a driver may be under the influence of alcohol or drugs. Slurred speech suggests impairment in cognitive and motor skills, which is often a result of intoxication. Bloodshot eyes can indicate the use of substances like alcohol, marijuana, or other drugs that affect the central nervous system, while poor coordination reflects a lack of control over one’s physical movements, another hallmark of being under the influence.

These indicators are commonly assessed by law enforcement during a traffic stop if a driver is suspected of driving while impaired. In contrast, clear eyes, alert manner, calm demeanor, good posture, excessive energy, and enthusiasm do not suggest impairment and can actually indicate that a driver is fit to operate a vehicle. Therefore, it is crucial to recognize and understand the correct signs associated with impaired driving to ensure accurate assessments in DWI situations.