Which of the following best describes the purpose of the SFST?

The purpose of the Standardized Field Sobriety Test (SFST) primarily revolves around identifying drivers who are unable to operate a vehicle safely. This is accomplished through a series of tasks that gauge both cognitive and physical abilities, which may be impaired by alcohol or drugs. The SFST is designed to provide law enforcement officers with observable evidence of a driver's impairment, which can indicate whether the driver poses a risk on the road.

While the test may indirectly provide insights into a driver’s level of alcohol consumption or detect signs of drug impairment, its main objective is to ascertain the overall ability of the driver to safely control their vehicle under the influence. The focus is on a driver’s impairment state rather than specifically measuring blood alcohol concentration or confirming the presence of drugs, aligning with the overarching goal of enhancing road safety.