Which threshold is required to justify initiating a stop and frisk based on observed behavior?

Which threshold is required to justify initiating a stop and frisk based on observed behavior?

• A. Probable cause.
• B. Reasonable suspicion.
• C. A search warrant.
• D. A policy directive.

Answer: (B)

Reasonable suspicion is the threshold for stopping someone when observed behavior suggests involvement in criminal activity. It means a reasonably observant officer has a specific, articulable basis—facts and rational inferences from those facts—that the person is up to something illegal. This allows a brief stop and questioning without fully detaining the person. If, during that encounter, the officer reasonably believes the person is armed and dangerous, a limited frisk (pat-down) for weapons is permitted. A higher standard, probable cause, is required for an arrest or for a more intrusive search, and a search warrant is needed for most searches based on probable cause. Policy directives alone do not establish the legal threshold for a stop.

Reasonable suspicion is the threshold for stopping someone when observed behavior suggests involvement in criminal activity. It means a reasonably observant officer has a specific, articulable basis—facts and rational inferences from those facts—that the person is up to something illegal. This allows a brief stop and questioning without fully detaining the person. If, during that encounter, the officer reasonably believes the person is armed and dangerous, a limited frisk (pat-down) for weapons is permitted. A higher standard, probable cause, is required for an arrest or for a more intrusive search, and a search warrant is needed for most searches based on probable cause. Policy directives alone do not establish the legal threshold for a stop.