What is the expected behavior if a subject is cooperative during the SFST?

The expected behavior of a subject who is cooperative during the Standardized Field Sobriety Test (SFST) is that they will comply with all instructions without interference or significant issues. This compliance indicates that the individual understands and acknowledges the testing process, showing respect for the officer's instructions. A cooperative subject is typically attentive, follows directions promptly, and exhibits an overall willingness to participate in the assessment.

This behavior is crucial because the SFST is designed to objectively measure a driver's ability to perform tasks that may indicate impairment due to alcohol or drugs. If the subject demonstrates cooperation, it allows for a more accurate assessment, providing law enforcement with clearer evidence regarding their sobriety or impairment level. Such cooperation also sets a tone of professionalism during the interaction, which can be beneficial for both the officer and the subject during the testing process.