Which of the following is a field sobriety test component?

Which of the following is a field sobriety test component?

• A. Breath test
• B. Blood glucose test
• C. Vision screening
• D. Hearing test

Answer: (A)

The key idea is recognizing what on-scene methods are used to assess impairment due to substances. A breath test is used in the field to quickly measure alcohol concentration in a person’s breath, which provides an objective BAC reading on-site. This chemical measurement complements observational field sobriety tasks and helps determine whether further testing or action is needed, making it a field sobriety test component. The other options measure things unrelated to on-scene impairment from alcohol: a blood glucose test screens metabolic status, while vision screening and hearing tests assess sensory function general to health screens, not specifically used to evaluate impairment from alcohol in the field.

The key idea is recognizing what on-scene methods are used to assess impairment due to substances. A breath test is used in the field to quickly measure alcohol concentration in a person’s breath, which provides an objective BAC reading on-site. This chemical measurement complements observational field sobriety tasks and helps determine whether further testing or action is needed, making it a field sobriety test component.

The other options measure things unrelated to on-scene impairment from alcohol: a blood glucose test screens metabolic status, while vision screening and hearing tests assess sensory function general to health screens, not specifically used to evaluate impairment from alcohol in the field.