OH POST key terms

A specific, articulable set of facts that would lead a reasonable officer to believe criminal activity is occurring or has occurred. It is a lower standard than probable cause and permits a brief investigative detention.

Facts and circumstances, based on the totality of information, that would lead a reasonable person to believe an offense has been committed and the person to be arrested did it. It supports arrests and warrant applications.

A brief, on-the-street detention based on reasonable suspicion during which an officer may question a person and, if warranted, conduct a limited pat-down for weapons. The scope must stay tied to the suspicion that justified it.

A limited external frisk of a person's outer clothing for weapons, permitted when an officer reasonably suspects the person is armed. It is not a general search for evidence and stops once the weapon threat is resolved.

A warrantless search of an arrestee's person and the area within immediate reach, justified by officer safety and evidence preservation. It must occur at or near the time and place of a lawful custodial arrest.

Urgent conditions that justify acting without a warrant, such as immediate danger to life, hot pursuit of a fleeing suspect, or imminent destruction of evidence. Courts judge them by the facts known at the time.

A warrantless search permitted when a person with authority over the place or item voluntarily agrees, without coercion. The officer must confirm the person's authority and may limit the search to the scope of consent given.

The advisement of rights required before custodial interrogation: the right to remain silent, that statements may be used against the person, the right to counsel, and appointed counsel if unable to afford one. A knowing, voluntary waiver is required.

Taking a person into custody in a manner that would lead a reasonable person to believe they are not free to leave, typically followed by booking. It triggers search and interrogation rules.

A judicial order authorizing an officer to take a named person into custody, supported by sworn facts showing probable cause. Officers must generally knock and announce before entering a home to serve it.

A written statement of facts sworn under oath before an authorized official. In policing it most often supports a warrant application or records the basis for an arrest or search.

The documented, unbroken record of who handled evidence, when, and for what purpose, from collection through final disposition. Gaps in the record can undermine the evidence's admissibility at trial.

Steps taken to secure and protect a scene so evidence is not altered, moved, or contaminated, including perimeter control, entry logs, and limiting access to necessary personnel. It begins when the first officer arrives.

The systematic gathering, packaging, and labeling of physical and digital items at a scene using methods that prevent loss and contamination. Items are documented before removal and packaged separately by type.

Recording a scene and evidence with overall, mid-range, and close-up photographs, often with scale references, before items are moved. Images must be logged and preserved unaltered.

A temporary seizure of a person for questioning or investigation, limited in scope and duration to the reason it was initiated. It requires reasonable suspicion and may not become a de facto arrest without probable cause.

A framework describing escalating and de-escalating levels of officer response matched to subject behavior, from presence and verbal direction through physical control, intermediate weapons, and deadly force. Officers move along it as circumstances change.

The legal standard for evaluating force, judged from the perspective of a reasonable officer on the scene under the facts known at the time, without hindsight. It considers the severity of the offense, immediate threat, and active resistance.

Force applied with the intent to cause, or that creates a substantial risk of causing, death or serious bodily injury. It may only be used when the officer reasonably believes it is necessary to prevent imminent death or serious injury to self or others.

Techniques such as time, distance, cover, communication, and tactical repositioning used to reduce the likelihood that force becomes necessary. It is applied when feasible and does not require an officer to accept unreasonable risk.

The obligation of an officer to stop or report another officer's clearly excessive force when in a position to do so, regardless of rank or assignment. Failure to act can carry criminal, civil, and disciplinary consequences.

The required written documentation of any use of force, describing the circumstances, actions taken, and injuries observed. Complete, timely reports support review, accountability, and defense of lawful actions.

A recording device worn by an officer that captures interactions with the public, generally governed by activation, retention, and release policies. Recordings are evidence and are subject to chain-of-custody and disclosure rules.

Information stored or transmitted in digital form, such as video, phone data, or computer files, that has investigative value. It requires careful preservation, hashing, and documentation to remain admissible.

A communication technique of fully concentrating on a speaker, reflecting back what was said, and asking clarifying questions. In policing it builds rapport, reduces tension, and improves the accuracy of information gathered.

Specialized response to people experiencing behavioral health crises, emphasizing recognition, communication, and referral to services rather than immediate enforcement. Trained officers aim to stabilize the situation and connect the person with care.

The idea that people judge police encounters by the fairness of the process: voice, neutrality, respectful treatment, and trustworthy motives. Applying it improves cooperation and perceptions of legitimacy.

The ability to recognize and respond appropriately to cultural differences in communication, values, and behavior, and to avoid letting assumptions bias decisions. It supports accurate assessment and respectful treatment in diverse communities.

Unconscious associations that can influence perception, judgment, and behavior without a person's awareness. Recognizing it helps officers test their assumptions and reduce disparities in stops, searches, and use of force.

A strategy of building partnerships with residents, solving problems collaboratively, and addressing the conditions that generate crime. It relies on communication, trust, and shared responsibility rather than enforcement alone.

The constitutional guarantee of fair procedures before the government deprives a person of life, liberty, or property. In policing it requires lawful authority, impartial treatment, and disclosure of exculpatory information.

Continuing to chase a fleeing suspect, which may allow entry into a dwelling without a warrant when probable cause exists and the suspect is not given a chance to escape. It requires continuous pursuit.

Agency rules limiting when officers may pursue a vehicle, considering the offense, traffic and road conditions, and risk to the public. It typically assigns a primary and secondary unit and requires supervisor authorization.

Driving an authorized emergency vehicle in response to an emergency, using warning equipment and due care while exercising privileges granted by law. Officers remain responsible for the safety of the public.

The legal duty of an emergency driver to operate with reasonable care for the safety of others, even when granted privileges such as proceeding past a red signal. It does not permit reckless disregard of public safety.

A driving approach that anticipates hazards, maintains safe following distance and speed for conditions, and assumes other drivers may err. It emphasizes observation, space cushion, and controlled responses over reaction alone.

The first trained person to arrive at an emergency, responsible for scene safety, assessment, and initial care until additional resources arrive. Actions include summoning help and beginning lifesaving measures.

Cardiopulmonary resuscitation with an automated external defibrillator: chest compressions and rescue breaths to circulate blood, plus a device that analyzes rhythm and delivers a shock if needed. Early use improves survival from cardiac arrest.

Techniques to stop severe bleeding, including direct pressure, wound packing, and tourniquet application. Controlling bleeding quickly is a priority because blood loss is a leading preventable cause of death in trauma.

The coordinated assessment and care provided before hospital arrival, including airway, breathing, circulation, and injury management, along with communication to receiving medical personnel. It follows a systematic patient assessment sequence.

Continuous perception and understanding of what is happening around you, including threats, escape routes, and the positions of others. It supports sound decisions under stress and is central to officer safety.

Placing yourself to maintain distance, cover, and a reaction advantage while controlling angles and escape routes. Good positioning creates time to communicate and reduces the need for physical force.

Controlled physical skills, such as blocks, holds, and takedowns, used to manage resistance and gain control while minimizing injury. They are applied within use-of-force policy and proportional to the threat.

Applying restraints to control a subject's hands, typically behind the back with double-locked cuffs, followed by a check for proper fit and circulation. Positional asphyxia risk requires monitoring after restraint.

A lawful detention of a vehicle and its occupants based on a traffic violation or reasonable suspicion of criminal activity. Officers choose a safe location, approach deliberately, and keep the stop limited in scope.

Standardized roadside assessments, such as horizontal gaze nystagmus, walk-and-turn, and one-leg stand, used to evaluate impairment and support or refute suspicion of driving under the influence. Results are documented for court.

Producing a clear, factual, chronological account of an incident that documents observations, actions, statements, and evidence. Good reports support prosecution, preserve memory, and withstand scrutiny.