DRE FINAL EXAM 2026/2027 | COMPLETE EXAM PREP | HIGH-YIELD
PRACTICE QUESTIONS & CORRECT ANSWERS | COMPREHENSIVE
STUDY GUIDE | LATEST UPDATE
1. Which two substances are indicated in the combination that is most
compatible with the signs of HGN, miosis, bradycardia, hypotension, and
ptosis?
Ritalin and Demerol
Librium and Alcohol
Cannabis and Heroin
Ketamine and Methaqualone
secobarbital and codeine
2. In a scenario where a driver is suspected of impairment and exhibits HGN,
which combination of drugs would you suspect based on their known
effects?
Cannabis and LSD
Valium and Librium
Secobarbital and Nitrous Oxide
PCP and Cocaine
3. In the darkroom exam, the direct light should be applied to each eye for
approximately ______ _.
10 s
20 s
15 s
25 s
, 5 seconds
4. Describe how Dilaudid affects the body and its potential signs of impairment.
Dilaudid has no significant effects on pupil size or muscle control.
Dilaudid can cause ptosis, which is a drooping of the eyelids,
indicating impairment.
Dilaudid primarily increases heart rate and causes elevated
temperature.
Dilaudid is known to cause nystagmus, which is involuntary eye
movement.
5. If a law enforcement officer suspects a driver is under the influence of a
depressant like Chloral Hydrate, what signs might they look for during a field
sobriety test?
Slowed reaction times and impaired coordination
Increased energy and hyperactivity
Rapid speech and erratic behavior
Dilated pupils and heightened awareness
6. Nurse Edmund understands that morphine is classified as:
Opiate agonist
Opiate agonist-antagonist
Nonsteroidal anti-inflammatory drug
Opiate antagonist
7. Which of the following is a synthetic opioid?
Methadone
, Morphine
Hydrocodone
Buprenorphine
8. In a DRE evaluation, if a subject exhibits dilated pupils, which drug categories
could likely be involved?
Hallucinogens and Stimulants
Cannabis and DA
DA and NA
NA and Stimulants
9. Describe the physiological changes in pupil size that occur when an
individual consumes Hallucinogens.
Pupil size varies randomly without relation to drug influence.
Pupil size constricts as a response to Hallucinogens.
Pupil size typically becomes dilated due to the effects of
Hallucinogens on the nervous system.
Pupil size remains unchanged regardless of substance use.
10. Describe the significance of observing HGN in a subject suspected of
impairment due to substance use.
HGN is a sign of physical fitness and coordination.
Observing HGN indicates potential impairment and helps assess
the influence of substances on motor control.
HGN is only observed in subjects with a BAC below .08.
HGN is irrelevant to assessing impairment from substances.
, 11. If a law enforcement officer observes a subject exhibiting increased heart
rate and dilated pupils, which category of drugs might they suspect the
subject has used?
CNS Stimulants
CNS Depressants
Opioids
Hallucinogens
12. A subject being evaluated has a blood pressure of 122 over 62. That subject
would have a _______________
low diastolic pressure.
low systolic pressure
high diastolic pressure.
blood pressure in the DRE average Range
13. Describe how the combined influence of Alcohol and Cannabis can affect
Horizontal Gaze Nystagmus (HGN) results during a drug evaluation.
Alcohol and Cannabis have no effect on HGN when combined.
Alcohol enhances the effects of Cannabis, leading to a negative
effect on HGN.
The combined influence of Alcohol and Cannabis can lead to an
overlapping effect on HGN, causing more pronounced impairment
than either substance alone.
The combination of Alcohol and Cannabis results in a null effect on
HGN.
PRACTICE QUESTIONS & CORRECT ANSWERS | COMPREHENSIVE
STUDY GUIDE | LATEST UPDATE
1. Which two substances are indicated in the combination that is most
compatible with the signs of HGN, miosis, bradycardia, hypotension, and
ptosis?
Ritalin and Demerol
Librium and Alcohol
Cannabis and Heroin
Ketamine and Methaqualone
secobarbital and codeine
2. In a scenario where a driver is suspected of impairment and exhibits HGN,
which combination of drugs would you suspect based on their known
effects?
Cannabis and LSD
Valium and Librium
Secobarbital and Nitrous Oxide
PCP and Cocaine
3. In the darkroom exam, the direct light should be applied to each eye for
approximately ______ _.
10 s
20 s
15 s
25 s
, 5 seconds
4. Describe how Dilaudid affects the body and its potential signs of impairment.
Dilaudid has no significant effects on pupil size or muscle control.
Dilaudid can cause ptosis, which is a drooping of the eyelids,
indicating impairment.
Dilaudid primarily increases heart rate and causes elevated
temperature.
Dilaudid is known to cause nystagmus, which is involuntary eye
movement.
5. If a law enforcement officer suspects a driver is under the influence of a
depressant like Chloral Hydrate, what signs might they look for during a field
sobriety test?
Slowed reaction times and impaired coordination
Increased energy and hyperactivity
Rapid speech and erratic behavior
Dilated pupils and heightened awareness
6. Nurse Edmund understands that morphine is classified as:
Opiate agonist
Opiate agonist-antagonist
Nonsteroidal anti-inflammatory drug
Opiate antagonist
7. Which of the following is a synthetic opioid?
Methadone
, Morphine
Hydrocodone
Buprenorphine
8. In a DRE evaluation, if a subject exhibits dilated pupils, which drug categories
could likely be involved?
Hallucinogens and Stimulants
Cannabis and DA
DA and NA
NA and Stimulants
9. Describe the physiological changes in pupil size that occur when an
individual consumes Hallucinogens.
Pupil size varies randomly without relation to drug influence.
Pupil size constricts as a response to Hallucinogens.
Pupil size typically becomes dilated due to the effects of
Hallucinogens on the nervous system.
Pupil size remains unchanged regardless of substance use.
10. Describe the significance of observing HGN in a subject suspected of
impairment due to substance use.
HGN is a sign of physical fitness and coordination.
Observing HGN indicates potential impairment and helps assess
the influence of substances on motor control.
HGN is only observed in subjects with a BAC below .08.
HGN is irrelevant to assessing impairment from substances.
, 11. If a law enforcement officer observes a subject exhibiting increased heart
rate and dilated pupils, which category of drugs might they suspect the
subject has used?
CNS Stimulants
CNS Depressants
Opioids
Hallucinogens
12. A subject being evaluated has a blood pressure of 122 over 62. That subject
would have a _______________
low diastolic pressure.
low systolic pressure
high diastolic pressure.
blood pressure in the DRE average Range
13. Describe how the combined influence of Alcohol and Cannabis can affect
Horizontal Gaze Nystagmus (HGN) results during a drug evaluation.
Alcohol and Cannabis have no effect on HGN when combined.
Alcohol enhances the effects of Cannabis, leading to a negative
effect on HGN.
The combined influence of Alcohol and Cannabis can lead to an
overlapping effect on HGN, causing more pronounced impairment
than either substance alone.
The combination of Alcohol and Cannabis results in a null effect on
HGN.
