75Q&A. 100% Verified, 2025/2026.
Definition of drug
Any substance that, when taken into the human body, can impair the ability of the person to
operate a vehicle safely.
Seven drug categories
CNS Depressants
CNS Stimulants
Hallucinogens
Dissociative Anesthetics
Narcotic Analgesics
Inhalants
Cannabis
What are psychophysical tests?
Divided attention tests
12 Steps in DRE Evaluation
1) Breath
2) Interview Arresting Officer
3) Preliminary Examination/Pulse
4) Eye Examination
5) Divided Attention
6) Vitals/Second Pulse
7) Dark Room
8) Muscle
9) Injection Sites/Third Pulse
10) Interview
11) Opinion
12) Toxicology
4 divided attention tests
Modified Rhomberg, Walk and Turn, One Leg Stand, Finger to Nose
Examples of Depressants
alcohol, barbiturates, valium, chloral hydrate
What is a Mickey Finn?
Psychoactive drink laced with date rape (chloral hydrate)
Examples of Stimulants
Cocaine, Methamphetamine, Amphetamine
, Examples of Hallucinogens
Peyote, MDMA (Ecstasy), LSD
Examples of Dissociative Anesthetics
PCP, Ketamine, DXM
Examples of Narcotic Analgesics
Heroin, Morphine, Oxycontin
Two types of Narcotic Analgesics
Opiates & synthetic
Examples of Inhalants
Volatile Solvents (paint)
Anesthetic gases (nitrous oxide)
Aerosols (hair sprays, insecticides)
Examples of Cannabis
Marijuana, Hashish, Marinol, K2
THC
Delta-9-tetrahydrocannabinol
PCP
Phencyclidine
Number of illicit drug users in US (2016)? Percentage of those users that use marijuana?
28.6 million / 84%
How many people drove under the influence of illicit drugs (2016)?
11.8 million (4.7%)
Polydrug
Using two or more drugs (same category)
Polycategory
Using two or more drugs from different categories
DRE evaluations are _____.
Systematic and standardized
3 goals of a DRE evaluation
1) Establish impairment and that the impairment is not from alcohol
2) Determine if the impairment is caused by a condition requiring medical attention
3) Determine category of drugs likely causing impairment