What is the basic purpose of a field sobriety test?

What is the basic purpose of a field sobriety test?

• A. To evaluate driving speed only
• B. To measure blood sugar levels
• C. To check vehicle registration
• D. To assess impairment and determine whether to continue with a formal test.

Answer: (D)

The basic purpose of a field sobriety test is to assess impairment and determine whether to continue with a formal test. By observing balance, coordination, attention, and cognitive function, officers look for signs that a driver may be impaired by alcohol or drugs. If impairment is indicated, this provides probable cause to order a more precise chemical test, such as a breathalyzer or blood test, to measure actual impairment levels. It’s not about driving speed, measuring blood sugar, or checking vehicle registration. The field test acts as a quick roadside check to decide if further testing is warranted.

The basic purpose of a field sobriety test is to assess impairment and determine whether to continue with a formal test. By observing balance, coordination, attention, and cognitive function, officers look for signs that a driver may be impaired by alcohol or drugs. If impairment is indicated, this provides probable cause to order a more precise chemical test, such as a breathalyzer or blood test, to measure actual impairment levels. It’s not about driving speed, measuring blood sugar, or checking vehicle registration. The field test acts as a quick roadside check to decide if further testing is warranted.