What is a common sign of drug impairment that officers are trained to recognize?

Slurred speech is a common sign of drug impairment that officers are trained to recognize because it often indicates a central nervous system depressant's effects, such as alcohol or certain prescription medications. When an individual is under the influence, their ability to articulate words clearly can be severely impacted, leading to a slowed and slurred manner of speaking. This impairment can also affect coordination and cognitive function, which are critical in tasks such as driving.

In contrast, rapid speech may be associated with stimulation but does not consistently indicate impairment due to drugs. Similarly, excessive energy and increased alertness can be misinterpreted as signs of sobriety or even normal activity levels and are not reliable indicators of drug impairment. Recognition of slurred speech helps officers make informed assessments during roadside evaluations and investigations related to driving under the influence or other illegal drug use scenarios.