DRE Glossary of Terms
Drug - 🧠ANSWER ✔✔Any substance that, when taken into the human
body, can impair the ability of the person to operate a vehicle safely
Accommodation Reflex - 🧠ANSWER ✔✔The adjustment of the eyes for
viewing at various distance. Meaning the pupils will automatically constrict
as objects move closer and dilate as objects move further away.
Addiction - 🧠ANSWER ✔✔Habitual, psychological, and physiological
dependence on a substance beyond one's voluntary control.
Addictive Effect - 🧠ANSWER ✔✔One mechanism of polydrug interaction.
For a particular indicator of impairment, two drugs produce an addictive
,effect if they both affect the indicator in the same way. For Example,
cocaine elevates pulse rate and PCP also elevates pulse rate. The
combination of Cocaine and PCP produces an additive effect on pulse rate.
Alkaloid - 🧠ANSWER ✔✔A chemical that is found in, and can be physically
extracted from, some substance. For example, Morphine is a natural
alkaloid of Opium. It does not require a chemical reaction to produce
Morphine from Opium.
Analgesic - 🧠ANSWER ✔✔A drug that relieves or allays pain
Analog (of a Drug) - 🧠ANSWER ✔✔A chemical that is very similar to the
drug, both in terms of molecular structure and in terms of psychoative
effects. For example, the drug Ketamine is an analog of PCP
Anesthetic - 🧠ANSWER ✔✔A drug that produces a general or local
insensibility to pain and other sensation.
Antagonictic Effect - 🧠ANSWER ✔✔One mechanism of polydrug
interaction. For a particular indicator of impairment, two drugs produce an
antagonistic effect if they affect the indicator in opposite ways. For
example, Heroin constricts pupils while cocaine dilates pupils. The
combination of Heroin and Cocaine produces antagonistic effect on pupil
, size. Depending on how much each drug was taken, and on when they
were taken , the suspect's pupils could be constricted, or dilated, or within
the DRE Average range of pupil size.
Arrhytmia - 🧠ANSWER ✔✔An abnormal heart rhythm
Artery - 🧠ANSWER ✔✔The strong, elastic blood vessels that carry blood
away from the heart.
Autonomic Nerve - 🧠ANSWER ✔✔A motor nerve that carries messages to
the muscles and organs that we do not consciously control. There are 2
kinds of autonomic nerves, the sympathetic nerves and parasympathetic
nerves.
Axon - 🧠ANSWER ✔✔The part of a neuron (nerve cell) that sends out a
neurotransmitter.
Bad Trip - 🧠ANSWER ✔✔A hallucination where the user becomes panic-
stricken by what he/she is seeing or hearing, and may become
uncontrollably excited, or even try to flee from the terror.
Blood Alcohol Concentration (BAC) - 🧠ANSWER ✔✔The percentage of
alcohol in a person's blood.
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COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Drug - 🧠ANSWER ✔✔Any substance that, when taken into the human
body, can impair the ability of the person to operate a vehicle safely
Accommodation Reflex - 🧠ANSWER ✔✔The adjustment of the eyes for
viewing at various distance. Meaning the pupils will automatically constrict
as objects move closer and dilate as objects move further away.
Addiction - 🧠ANSWER ✔✔Habitual, psychological, and physiological
dependence on a substance beyond one's voluntary control.
Addictive Effect - 🧠ANSWER ✔✔One mechanism of polydrug interaction.
For a particular indicator of impairment, two drugs produce an addictive
,effect if they both affect the indicator in the same way. For Example,
cocaine elevates pulse rate and PCP also elevates pulse rate. The
combination of Cocaine and PCP produces an additive effect on pulse rate.
Alkaloid - 🧠ANSWER ✔✔A chemical that is found in, and can be physically
extracted from, some substance. For example, Morphine is a natural
alkaloid of Opium. It does not require a chemical reaction to produce
Morphine from Opium.
Analgesic - 🧠ANSWER ✔✔A drug that relieves or allays pain
Analog (of a Drug) - 🧠ANSWER ✔✔A chemical that is very similar to the
drug, both in terms of molecular structure and in terms of psychoative
effects. For example, the drug Ketamine is an analog of PCP
Anesthetic - 🧠ANSWER ✔✔A drug that produces a general or local
insensibility to pain and other sensation.
Antagonictic Effect - 🧠ANSWER ✔✔One mechanism of polydrug
interaction. For a particular indicator of impairment, two drugs produce an
antagonistic effect if they affect the indicator in opposite ways. For
example, Heroin constricts pupils while cocaine dilates pupils. The
combination of Heroin and Cocaine produces antagonistic effect on pupil
, size. Depending on how much each drug was taken, and on when they
were taken , the suspect's pupils could be constricted, or dilated, or within
the DRE Average range of pupil size.
Arrhytmia - 🧠ANSWER ✔✔An abnormal heart rhythm
Artery - 🧠ANSWER ✔✔The strong, elastic blood vessels that carry blood
away from the heart.
Autonomic Nerve - 🧠ANSWER ✔✔A motor nerve that carries messages to
the muscles and organs that we do not consciously control. There are 2
kinds of autonomic nerves, the sympathetic nerves and parasympathetic
nerves.
Axon - 🧠ANSWER ✔✔The part of a neuron (nerve cell) that sends out a
neurotransmitter.
Bad Trip - 🧠ANSWER ✔✔A hallucination where the user becomes panic-
stricken by what he/she is seeing or hearing, and may become
uncontrollably excited, or even try to flee from the terror.
Blood Alcohol Concentration (BAC) - 🧠ANSWER ✔✔The percentage of
alcohol in a person's blood.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
