Which components are listed as Standardized Field Sobriety Tests?

• A. Vertical leg stand, Walk and turn, Horizontal Gaze Nystagmus (HGN)
• B. Balance test, Finger-to-nose, Walk and talk
• C. Ruffner test, Heel-to-toe test, Finger printing
• D. Breathalyzer, Blood test, Urine test

Answer: (A)

Standardized Field Sobriety Tests are a set of three tests used to screen for impairment: Horizontal Gaze Nystagmus, Walk-and-Turn, and One-Leg Stand. HGN checks involuntary eye movements as a driver follows a moving stimulus; Walk-and-Turn evaluates balance, coordination, and attention by having the person take steps, turn, and walk back; One-Leg Stand tests the ability to balance while counting aloud.

Among the options, the best match includes two of the recognized SFST components: Horizontal Gaze Nystagmus and Walk-and-Turn. These two are definitive parts of the standard battery, which is why this choice aligns with the concept the tests are designed to assess. The other items mix in tests not part of the Standardized Field Sobriety Tests (and the fully recognized third component of the battery would be One-Leg Stand).