SLST stands for Single-Leg Stand Test. It is a standardized field sobriety test used by law enforcement officers to assess an individual's level of impairment due to alcohol or drugs. The SLST is part of a battery of tests known as the Standardized Field Sobriety Test (SFST) developed by the National Highway Traffic Safety Administration (NHTSA) in the United States.
During the SLST, the test subject is required to stand on one leg with the other leg raised slightly off the ground, approximately six inches. While doing so, they are instructed to maintain their balance and count aloud until told to stop. The officer measures the subject's ability to remain steady, as any swaying, hopping, or putting the raised foot down indicates possible impairment.
The SLST primarily evaluates a person's balance, coordination, and divided attention, as impaired individuals often struggle to complete the task successfully. It is important to note that factors like age, physical condition, and unfamiliarity with the test can also affect the outcome. Therefore, the SLST should be used in conjunction with other field sobriety tests and a comprehensive assessment of the individual's behavior, appearance, and driving pattern to determine impairment accurately.
Overall, the Single-Leg Stand Test is a tool utilized by law enforcement officers to assist in evaluating an individual's sobriety level and determine if further testing, such as a breathalyzer or blood test, is necessary to establish intoxication.
