Phase 1 for DUI procedures involve which activity?

Phase 1 for DUI procedures involve which activity?

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

Answer: (A)

Phase One centers on initiating the stop based on what’s observed while the vehicle is in motion. This is the moment the officer uses a traffic violation or signs of impairment seen in the moving vehicle to justify pulling it over and starting the DUI investigation. The other activities—pre-arrest screening with SFST or a portable breath test, field sobriety testing during the contact phase, and post-arrest or chemical testing—occur after the stop and are part of later phases. So this option correctly identifies Phase One as the vehicle-in-motion activity that justifies the initial stop.

Phase One centers on initiating the stop based on what’s observed while the vehicle is in motion. This is the moment the officer uses a traffic violation or signs of impairment seen in the moving vehicle to justify pulling it over and starting the DUI investigation. The other activities—pre-arrest screening with SFST or a portable breath test, field sobriety testing during the contact phase, and post-arrest or chemical testing—occur after the stop and are part of later phases. So this option correctly identifies Phase One as the vehicle-in-motion activity that justifies the initial stop.