What is a key factor that helps determine a level of suspicion?

A key factor that helps determine a level of suspicion is articulable facts. This term refers to clear and specific facts that law enforcement officers can observe and describe, which contribute to a reasonable suspicion that a crime may be occurring or may have occurred. Articulable facts must be based on the officer's observations, training, and experience, enabling them to justify the need to investigate further or take action, such as stopping or questioning an individual.

In contrast, personal opinion lacks a factual basis and can lead to arbitrary decision-making, which does not contribute to a lawful standard of suspicion. Public perception may influence community relations and trust in law enforcement, but it is not a legal standard for determining suspicion. Tangible evidence, while valuable for establishing proof in legal proceedings, does not inherently dictate the standard of suspicion needed for initial investigative actions, which relies on the presence of articulable facts.