DWI DETECTION AND SFST
COMPREHENSIVE IMPAIRED DRIVING
REVIEW SHEET FULL SOLUTIONS
●● DWI DETECTION PROCESS - Phases
Answer: 1. Phase One - Vehicle In Motion 2. Phase Two - Personal
Contact 3. Phase Three - Pre-arrest Screening
●● HORIZONTAL GAZE NYSTAGMUS (HGN)
Answer: Involuntary jerking of the eyes occurring as the eyes gaze to the
side. The first test administered in the SFST battery.
●● General deterrence of DWI
Answer: Based in the driving public's fear of being arrested.
●● Fort Lauderdale Study, 1975
Answer: Only 22% of violators with BACs between 0.10 and 0.20 were
arrested for DWI. - Defined need for improved Officer training.
●● Two Approaches to eliminating DWI's
Answer: One: prevention -- gives promise of the ultimate, lasting
solution to the DWI problem; but it will require a substantial amount of
,time to mature fully. Two: deterrence -- only offers a partial or limited
solution, but it is available right now.
●● Stockton, California Study, 1976 - 79
Answer: For every DWI violator actually arrested for DWI, three others
are contacted by police officers, but are not arrested for DWI. But arrests
increased 500% and DUI decreased by 1/3rd.
●● Alcohol is
Answer: the most abused drug in the United States.
●● Ethyl alcohol
Answer: also known as Ethanol or beverage alcohol.
●● 80 proof beverage has an ethanol concentration of
Answer: 40 %.
●● On the average, however, a person's blood alcohol concentration will
drop by about
Answer: 0.015 per hour.
●● The average DWI violator commits that violation ____ times a year.
Answer: 80
,●● In typical enforcement jurisdictions one DWI violation in ____
results in arrest.
Answer: 88
●● In the Fort Lauderdale study, police officers arrested ____ % of the
drivers they contacted whose BACs were .10 to .20.
Answer: 22
●● Name three different chemicals that are alcohols.
Answer: Ethanol, Methanol and Isopropyl
●● Which of these is beverage alcohol, intended for human
consumption?
Answer: Ethanol
●● What is the chemical symbol for beverage alcohol?
Answer: ETOH
●● What is the name of the chemical process by which beverage alcohol
is produced naturally?
Answer: Fermentation
, ●● What is the name of the process used to produce high concentration
beverage alcohol?
Answer: Distillation
●● Blood alcohol concentration is the number of ____ of alcohol in
every 100 milliliters of blood.
Answer: Milligrams
●● True or false: Pound for pound, the average woman contains more
water than does the average man.
Answer: False
●● Every chemical that is an "alcohol" contains what three elements?
Answer: Hydrogen, Oxygen and Carbon
●● True or false: Alcohol can pass directly through the stomach walls
and enter the bloodstream.
Answer: True
●● What is the name of the muscle that controls the passage from the
stomach to the lower gastrointestinal tract?
Answer: Pyloric valve.
COMPREHENSIVE IMPAIRED DRIVING
REVIEW SHEET FULL SOLUTIONS
●● DWI DETECTION PROCESS - Phases
Answer: 1. Phase One - Vehicle In Motion 2. Phase Two - Personal
Contact 3. Phase Three - Pre-arrest Screening
●● HORIZONTAL GAZE NYSTAGMUS (HGN)
Answer: Involuntary jerking of the eyes occurring as the eyes gaze to the
side. The first test administered in the SFST battery.
●● General deterrence of DWI
Answer: Based in the driving public's fear of being arrested.
●● Fort Lauderdale Study, 1975
Answer: Only 22% of violators with BACs between 0.10 and 0.20 were
arrested for DWI. - Defined need for improved Officer training.
●● Two Approaches to eliminating DWI's
Answer: One: prevention -- gives promise of the ultimate, lasting
solution to the DWI problem; but it will require a substantial amount of
,time to mature fully. Two: deterrence -- only offers a partial or limited
solution, but it is available right now.
●● Stockton, California Study, 1976 - 79
Answer: For every DWI violator actually arrested for DWI, three others
are contacted by police officers, but are not arrested for DWI. But arrests
increased 500% and DUI decreased by 1/3rd.
●● Alcohol is
Answer: the most abused drug in the United States.
●● Ethyl alcohol
Answer: also known as Ethanol or beverage alcohol.
●● 80 proof beverage has an ethanol concentration of
Answer: 40 %.
●● On the average, however, a person's blood alcohol concentration will
drop by about
Answer: 0.015 per hour.
●● The average DWI violator commits that violation ____ times a year.
Answer: 80
,●● In typical enforcement jurisdictions one DWI violation in ____
results in arrest.
Answer: 88
●● In the Fort Lauderdale study, police officers arrested ____ % of the
drivers they contacted whose BACs were .10 to .20.
Answer: 22
●● Name three different chemicals that are alcohols.
Answer: Ethanol, Methanol and Isopropyl
●● Which of these is beverage alcohol, intended for human
consumption?
Answer: Ethanol
●● What is the chemical symbol for beverage alcohol?
Answer: ETOH
●● What is the name of the chemical process by which beverage alcohol
is produced naturally?
Answer: Fermentation
, ●● What is the name of the process used to produce high concentration
beverage alcohol?
Answer: Distillation
●● Blood alcohol concentration is the number of ____ of alcohol in
every 100 milliliters of blood.
Answer: Milligrams
●● True or false: Pound for pound, the average woman contains more
water than does the average man.
Answer: False
●● Every chemical that is an "alcohol" contains what three elements?
Answer: Hydrogen, Oxygen and Carbon
●● True or false: Alcohol can pass directly through the stomach walls
and enter the bloodstream.
Answer: True
●● What is the name of the muscle that controls the passage from the
stomach to the lower gastrointestinal tract?
Answer: Pyloric valve.
