NYS Trooper key terms
NYS Trooper · Get comfortable with the vocabulary.
- Probable Cause
- Related: Reasonable Suspicion, Arrest Warrant, Search Warrant
The level of facts and circumstances that would lead a reasonable officer to believe a crime has been, is being, or will be committed, or that evidence of a crime will be found in a particular place.
- Reasonable Suspicion
- Related: Probable Cause, Stop and Frisk, Terry Stop
A lower threshold than probable cause in which specific, articulable facts, taken with rational inferences, suggest criminal activity; it justifies a brief investigative stop and limited frisk for weapons.
- Terry Stop
- Related: Reasonable Suspicion, Stop and Frisk, Investigative Detention
A brief, involuntary detention based on reasonable suspicion during which an officer may ask questions and, if warranted, pat down outer clothing for weapons; named for the court decision establishing the standard.
- Stop and Frisk
- Related: Terry Stop, Reasonable Suspicion
The practice of briefly detaining a person on reasonable suspicion and patting down outer clothing only to locate weapons, not to search for contraband generally.
- Search Warrant
- Related: Probable Cause, Affidavit, Exigent Circumstances
A court order, supported by sworn probable cause, authorizing officers to search a specified place or person for specified evidence and to seize items listed in the order.
- Arrest Warrant
- Related: Probable Cause, Custodial Arrest
A court order directing law enforcement to take a named person into custody based on a showing of probable cause that the person committed an offense.
- Exigent Circumstances
- Related: Search Warrant, Warrantless Search
Urgent conditions, such as imminent danger to life, hot pursuit of a suspect, or likely destruction of evidence, that permit warrantless action that would otherwise require a warrant.
- Warrantless Search
- Related: Exigent Circumstances, Search Incident to Arrest, Plain View Doctrine
A search conducted without a warrant under a recognized exception, such as consent, search incident to arrest, plain view, automobile exception, or exigency.
- Search Incident to Arrest
- Related: Custodial Arrest, Warrantless Search
A warrantless search of an arrestee's person and the area within immediate reach, permitted to remove weapons and prevent destruction of evidence.
- Plain View Doctrine
- Related: Warrantless Search, Probable Cause
The rule allowing an officer lawfully present in a location to seize evidence of a crime without a warrant when its incriminating character is immediately apparent.
- Custodial Arrest
- Related: Arrest Warrant, Miranda Warning
The taking of a person into custody for the purpose of charging them with an offense, triggering rights such as being informed of the charges and appearing before a court.
- Miranda Warning
- Related: Custodial Interrogation, Custodial Arrest
The advisement of the right to remain silent, that statements may be used against the person, the right to counsel, and the right to appointed counsel, required before custodial interrogation.
- Custodial Interrogation
- Related: Miranda Warning, Custodial Arrest
Questioning by law enforcement of a person in custody that is reasonably likely to elicit an incriminating response, which requires prior Miranda warnings.
- Chain of Custody
- Related: Evidence Collection, Property and Evidence Log
A documented, unbroken record of who handled evidence, when, and for what purpose, from seizure through final disposition, used to show the evidence is authentic and unaltered.
- Evidence Collection
- Related: Chain of Custody, Crime Scene Preservation
The systematic identification, documentation, preservation, and packaging of physical items at a scene so they remain admissible and unaltered.
- Crime Scene Preservation
- Related: Evidence Collection, Chain of Custody
Steps taken to secure a scene, limit access, protect perishable evidence, and record original conditions before anything is moved or collected.
- Affidavit
- Related: Search Warrant, Probable Cause
A written statement of facts sworn to under oath, often used to support a request for a warrant or to record an officer's observations.
- Information Report
- Related: Incident Report, Field Notes
A written report documenting observations, incidents, or intelligence that may not involve an arrest or charge, used for records and later reference.
- Incident Report
- Related: Information Report, Field Notes, Report Narrative
A formal written account of an event an officer responded to, capturing who, what, when, where, how, and the action taken, in chronological order.
- Report Narrative
- Related: Incident Report, Field Notes
The narrative section of a report that tells the story of the incident in clear chronological order, using objective language and distinguishing observation from hearsay.
- Field Notes
- Related: Report Narrative, Incident Report
Contemporaneous written or recorded notes made at the scene, used to refresh memory and to draft a complete report; they may be discoverable.
- Freedom of Information Law
- Related: Records Retention, Redaction
New York's public records law requiring agencies to disclose records on request, subject to exemptions such as personal privacy, active investigations, and public safety.
- Redaction
- Related: Freedom of Information Law, Records Retention
The removal or obscuring of protected information, such as personal identifiers or victim data, from a record before release, with the basis noted.
- Records Retention
- Related: Freedom of Information Law, Redaction
The schedule governing how long particular records must be kept and when they may be destroyed, based on legal, administrative, and evidentiary needs.
- Vehicle and Traffic Law
- Related: Traffic Infraction, DWI
New York's statute governing operation of vehicles, licensing, equipment, and traffic rules; violations range from traffic infractions to misdemeanors and felonies.
- Traffic Infraction
- Related: Vehicle and Traffic Law, Traffic Stop
A minor violation of traffic law that is not a crime, such as speeding or failing to signal, generally resolved by fine rather than arrest or jail.
- Traffic Stop
- Related: Reasonable Suspicion, Traffic Infraction
The lawful detention of a vehicle based on reasonable suspicion of a traffic violation or other offense, during which the officer controls the scope and duration of the encounter.
- DWI
- Related: Standardized Field Sobriety Test, Implied Consent
Driving while intoxicated or impaired by alcohol or drugs; investigation includes standardized field sobriety tests, chemical testing, and documentation of observations.
- Standardized Field Sobriety Test
- Related: DWI, Probable Cause
A validated battery of roadside tests, including horizontal gaze nystagmus, walk-and-turn, and one-leg stand, administered to assess impairment and support probable cause.
- Implied Consent
- Related: DWI, Standardized Field Sobriety Test
The legal principle that a licensed driver has agreed in advance to submit to a chemical test of breath, blood, or urine when lawfully arrested for impaired driving.
- Accident Investigation
- Related: Accident Report, Traffic Stop
The systematic response to a collision, including scene safety, injury care, measurement, witness interviews, and documentation of contributing factors.
- Accident Report
- Related: Accident Investigation, Incident Report
The official form recording a motor vehicle collision, including parties, vehicles, injuries, damage, conditions, and contributing factors.
- Radio Dispatch
- Related: Call Priority, Scene Safety
The assignment of calls to units by a dispatcher, including location, nature of the call, and safety information, with acknowledgment and status updates from the unit.
- Call Priority
- Related: Radio Dispatch, Emergency Vehicle Operation
The classification of a 911 call by urgency, which determines response order, resources assigned, and whether lights and siren are used.
- Scene Safety
- Related: Radio Dispatch, Crime Scene Preservation
The ongoing assessment and control of hazards at a call, including threats from persons, traffic, weather, and structures, before and during contact.
- Emergency Vehicle Operation
- Related: Call Priority, Vehicle Pursuit
Driving a patrol vehicle in emergency mode with lights and siren, subject to due regard for public safety and department policy on speed and right-of-way.
- Vehicle Pursuit
- Related: Emergency Vehicle Operation, Call Priority
An attempt by an officer to apprehend a fleeing vehicle, governed by policy limits, supervisor authorization, and continuous balancing of risk to the public.
- Use of Force
- Related: Scene Safety, De-escalation
The application of physical control, tools, or weapons to gain compliance, which must be objectively reasonable, necessary, and proportional to the threat presented.
- De-escalation
- Related: Use of Force, Scene Safety
Techniques such as communication, time, distance, and tactical repositioning used to reduce the intensity of an encounter and avoid unnecessary force.