AZ State Trooper study materials
AZ State Trooper study resources

AZ State Trooper key terms

AZ State Trooper · Get comfortable with the vocabulary.

Reasonable Suspicion

A specific, articulable set of facts that would lead a reasonable officer to believe criminal activity may be occurring, justifying a brief investigative stop.

Related: Terry Stop, Probable Cause
Probable Cause

Facts and circumstances that would convince a reasonable person that a crime has been committed and that a particular person committed it, supporting arrest or a search warrant.

Related: Reasonable Suspicion, Arrest Warrant, Exclusionary Rule
Terry Stop

A brief detention based on reasonable suspicion during which an officer may investigate and, if warranted by safety concerns, conduct a limited pat-down for weapons.

Related: Reasonable Suspicion, Pat-Down Search
Pat-Down Search

A limited exterior frisk of a person's clothing for weapons, permitted when an officer reasonably suspects the person is armed and dangerous.

Related: Terry Stop, Search Warrant
Search Warrant

A written court order authorizing officers to search a specified place or person for specific items, issued upon a showing of probable cause.

Related: Probable Cause, Exclusionary Rule
Arrest Warrant

A court order directing officers to take a named person into custody, based on a sworn showing that probable cause exists for the arrest.

Related: Probable Cause, Custodial Interrogation
Miranda Warning

The advisory of rights to remain silent, that statements may be used against the person, and to counsel, required before custodial interrogation.

Related: Custodial Interrogation, Exclusionary Rule
Custodial Interrogation

Questioning by officers of a person who is in custody or whose freedom is significantly restrained, triggering the requirement for Miranda warnings.

Related: Miranda Warning, Arrest Warrant
Exclusionary Rule

The principle that evidence obtained through an unconstitutional search, seizure, or interrogation generally cannot be used against the defendant at trial.

Related: Probable Cause, Search Warrant, Miranda Warning
Chain of Custody

The documented, unbroken record of who handled evidence, when, and where, from collection through trial, used to show the evidence is authentic.

Related: Evidence Log, Field Interview
Elements of an Offense

The specific facts the prosecution must prove beyond a reasonable doubt for a conviction, such as the prohibited act and the required mental state.

Related: Criminal Intent, Probable Cause
Criminal Intent

The mental state or purpose with which a person acts when committing a prohibited act, often called mens rea and required for most serious offenses.

Related: Elements of an Offense
Arraignment

An early court appearance in which the defendant is informed of the charges and enters a plea, and bail or release conditions may be set.

Related: Arrest Warrant, Booking
Booking

The administrative process of recording an arrested person's identity, charges, and property after arrest and before jail custody.

Related: Arraignment, Chain of Custody
Field Interview

A documented contact with a person during patrol in which the officer records identifying information and circumstances for later investigative use.

Related: Chain of Custody, Observation Report
Observation Report

A written narrative recording what an officer personally saw, heard, and did, organized chronologically and factually without opinion or conclusion.

Related: Field Interview, Report Narrative, Chronological Order
Report Narrative

The main written account in a police report describing the incident from beginning to end, including actions, statements, and evidence collected.

Related: Observation Report, Chronological Order
Chronological Order

Arranging events in the sequence they occurred, a standard organization for police narratives that helps readers follow the account accurately.

Related: Report Narrative, Observation Report
Objective Language

Writing that states observable facts and direct quotations without personal opinion, speculation, or emotionally loaded wording, keeping reports credible and precise.

Related: Report Narrative, Observation Report
Evidence Log

A running written record listing each item seized or received, its identifying number, description, and the names of persons handling it.

Related: Chain of Custody
Traffic Stop Procedure

The standard sequence for stopping a vehicle safely, including choosing a location, signaling the driver, positioning the patrol car, and approaching with awareness.

Related: Emergency Lighting, Reasonable Suspicion
Emergency Lighting

Vehicle-mounted flashing lights used to warn traffic and identify an official stop; their use can affect whether a seizure has occurred.

Related: Traffic Stop Procedure
Vehicle Pursuit Policy

Agency rules setting when an officer may chase a fleeing vehicle, weighing public danger, offense severity, and supervisory control, and when the chase must end.

Related: Traffic Stop Procedure, Radio Communication Protocol
Radio Communication Protocol

Standard procedures for clear, concise radio traffic, including identifying the unit, stating location and situation, and requesting backup or resources.

Related: Vehicle Pursuit Policy, Officer Safety Positioning
Officer Safety Positioning

Choosing where to stand during a stop or contact to maintain cover, sightlines, and distance, reducing exposure to traffic and to the person contacted.

Related: Traffic Stop Procedure, Radio Communication Protocol
Accident Investigation

The systematic process of documenting a crash, including scene measurements, witness statements, vehicle damage, and contributing factors such as speed or impairment.

Related: Skid Mark Analysis, Observation Report
Skid Mark Analysis

Using the length and pattern of tire marks to estimate vehicle speed and braking at a crash scene, recorded with measurements and photographs.

Related: Accident Investigation
Implied Consent

The legal principle that drivers, by using public roads, agree in advance to chemical testing when lawfully arrested for suspected impaired driving.

Related: Probable Cause, Field Sobriety Test
Field Sobriety Test

Standardized physical assessments, such as walk-and-turn and one-leg stand, used to gather evidence of impairment during an impaired-driving investigation.

Related: Implied Consent, Probable Cause
Written Examination

The scored knowledge and aptitude test in the selection process, often covering reading, writing, observation, and reasoning, used to screen applicants.

Related: Reading Comprehension, Physical Fitness Test
Physical Fitness Test

A scored assessment of strength, endurance, and agility, such as push-ups, sit-ups, and a timed run, used to judge readiness for academy training.

Related: Written Examination, Background Investigation
Background Investigation

A thorough check of an applicant's work history, references, credit, driving record, and criminal history to confirm suitability and honesty.

Related: Polygraph Examination, Selection Interview
Polygraph Examination

A recorded physiological test used to verify statements during screening; results are considered with other evidence rather than alone.

Related: Background Investigation, Selection Interview
Selection Interview

A structured oral assessment in which a panel asks standardized questions about judgment, integrity, and motivation to evaluate an applicant's suitability.

Related: Background Investigation, Polygraph Examination
Reading Comprehension

The ability to read a passage and identify its main idea, supporting details, and inferences, a skill tested in written exams and required for report work.

Related: Written Examination, Observation Skills
Observation Skills

The ability to notice and later recall specific details such as people, vehicles, and sequence of events, tested through memory and attention exercises.

Related: Reading Comprehension, Observation Report
Inference

A conclusion drawn from stated facts rather than directly stated in the text, a common question type in reading and observation assessments.

Related: Reading Comprehension, Observation Skills
Main Idea

The central point a passage conveys, often stated in a topic sentence and used as the basis for many comprehension questions.

Related: Reading Comprehension, Inference