Which statement best describes Phase 3 DUI screening?

Which statement best describes Phase 3 DUI screening?

• A. Pre-arrest screening (SFST, Portable breath test)
• B. Vehicle in motion (Justification for stop)
• C. Post-arrest testing
• D. Administrative processing

Answer: (A)

Phase 3 DUI screening is about pre-arrest screening: officers use standardized field sobriety tests and a portable breath test to quickly assess impairment and determine probable cause to arrest before any formal arrest is made. This stage comes after the stop is made but before an arrest, serving as the immediate, on-scene determination of whether the driver is intoxicated. The other options describe stages that happen earlier or later—Phase I focuses on the stop justified by the vehicle in motion, Phase II covers personal contact and initial assessment, and post-arrest testing and administrative processing occur after an arrest.

Phase 3 DUI screening is about pre-arrest screening: officers use standardized field sobriety tests and a portable breath test to quickly assess impairment and determine probable cause to arrest before any formal arrest is made. This stage comes after the stop is made but before an arrest, serving as the immediate, on-scene determination of whether the driver is intoxicated. The other options describe stages that happen earlier or later—Phase I focuses on the stop justified by the vehicle in motion, Phase II covers personal contact and initial assessment, and post-arrest testing and administrative processing occur after an arrest.