DRE School Review Exam Questions with
correct Answers 2025/2026/ A+ Graded
100% Verified.
How do we define the word "Drug"? - ANS -Any substance that, when taken into the
human body, can impair the ability of the person to operate a vehicle safely.
What drug other then Alcohol was found most frequently in the Los Angeles Field
Validation Study? - ANS -PCP
What does Polydrug use mean? - ANS -Ingesting drugs from two or more categories
How common was polydrug use in the LA Field Validation Study? - ANS -72%
How good were the DRE's in the Field Validation Study? - ANS -92.5% Presence of at
least one drug category predicted by the DRE's
In the University of Tennessee Study what percentage of injured drivers had drugs other
then alcohol in them? - ANS -40%
Name a major analog of PCP - ANS -Ketamine
Name three sub-categories of inhalants - ANS -Volatile solvents
Aerosols
Anesthetic Gases
What is the active ingredient in Cannabis? - ANS -Delta-9-Tetrahydrocannibinol (THC)
Define Pulse - ANS -The expansion and contraction of the walls of an artery, generated
by the pumping action of the blood.
What is blood pressure measure in? - ANS -mmhg (millimeters of mercury)
Name three different pulse points and indicate their location - ANS -Radial - Crease of
the wrist at the base of the thumb
Brachial - Crease of the arm
Carotid - In the neck either side of the Adam's Apple
, What is the DRE average range for pulse rate? - ANS -60-90 BPM
Define Blood Pressure - ANS -The force exerted be blood on the walls of the arteries.
Name the instrument used to measure blood pressure - ANS -Sphygmomanometer
When does the blood pressure reach its highest value? - ANS -As the heart is fully
contracted and the blood is sent surging into the arteries
What is the highest value in a blood pressure called? - ANS -Systolic
When does the blood pressure reach its lowest value? - ANS -when the heart is fully
expanded or relaxed
What is the lowest value in a blood pressure called? - ANS -Diastolic
What is the DRE average range for blood pressure? - ANS -Systolic 120-140
Diastolic 70-90
What does HG mean? - ANS -Mercury
What are the three validated clues of impairment that have been established for HGN? -
ANS -1. Lack of smooth pursuit
2. Distinct and sustained nystagmus at maximum deviation.
3. Angle of onset
What formula expresses the approximate statistical relationship between BAC and the
angle of onset of nystagmus? - ANS -BAC=50-Angle of Onset
What categories of drugs will generally cause HGN? - ANS -CNS Depressants
Dissociative Anesthetics
Inhalants
What categories of drugs causes lack of convergence but not HGN? - ANS -Cannabis
What are the three lighting conditions which we must estimate the size of the suspect's
pupils? - ANS -1. Room Light
2. Near total darkness
3. Direct Light
How ling should we wait in the darkroom before beginning to check the suspect's pupils?
- ANS -90 seconds
Name the device we use to estimate the suspect's pupils? - ANS -pupilometer
correct Answers 2025/2026/ A+ Graded
100% Verified.
How do we define the word "Drug"? - ANS -Any substance that, when taken into the
human body, can impair the ability of the person to operate a vehicle safely.
What drug other then Alcohol was found most frequently in the Los Angeles Field
Validation Study? - ANS -PCP
What does Polydrug use mean? - ANS -Ingesting drugs from two or more categories
How common was polydrug use in the LA Field Validation Study? - ANS -72%
How good were the DRE's in the Field Validation Study? - ANS -92.5% Presence of at
least one drug category predicted by the DRE's
In the University of Tennessee Study what percentage of injured drivers had drugs other
then alcohol in them? - ANS -40%
Name a major analog of PCP - ANS -Ketamine
Name three sub-categories of inhalants - ANS -Volatile solvents
Aerosols
Anesthetic Gases
What is the active ingredient in Cannabis? - ANS -Delta-9-Tetrahydrocannibinol (THC)
Define Pulse - ANS -The expansion and contraction of the walls of an artery, generated
by the pumping action of the blood.
What is blood pressure measure in? - ANS -mmhg (millimeters of mercury)
Name three different pulse points and indicate their location - ANS -Radial - Crease of
the wrist at the base of the thumb
Brachial - Crease of the arm
Carotid - In the neck either side of the Adam's Apple
, What is the DRE average range for pulse rate? - ANS -60-90 BPM
Define Blood Pressure - ANS -The force exerted be blood on the walls of the arteries.
Name the instrument used to measure blood pressure - ANS -Sphygmomanometer
When does the blood pressure reach its highest value? - ANS -As the heart is fully
contracted and the blood is sent surging into the arteries
What is the highest value in a blood pressure called? - ANS -Systolic
When does the blood pressure reach its lowest value? - ANS -when the heart is fully
expanded or relaxed
What is the lowest value in a blood pressure called? - ANS -Diastolic
What is the DRE average range for blood pressure? - ANS -Systolic 120-140
Diastolic 70-90
What does HG mean? - ANS -Mercury
What are the three validated clues of impairment that have been established for HGN? -
ANS -1. Lack of smooth pursuit
2. Distinct and sustained nystagmus at maximum deviation.
3. Angle of onset
What formula expresses the approximate statistical relationship between BAC and the
angle of onset of nystagmus? - ANS -BAC=50-Angle of Onset
What categories of drugs will generally cause HGN? - ANS -CNS Depressants
Dissociative Anesthetics
Inhalants
What categories of drugs causes lack of convergence but not HGN? - ANS -Cannabis
What are the three lighting conditions which we must estimate the size of the suspect's
pupils? - ANS -1. Room Light
2. Near total darkness
3. Direct Light
How ling should we wait in the darkroom before beginning to check the suspect's pupils?
- ANS -90 seconds
Name the device we use to estimate the suspect's pupils? - ANS -pupilometer
