SFST Flashcards
In typical enforcement jurisdiction 1 DUI violations in
100 result in arrest
In the fort Lauderdale study, police officers arrested what % of drivers they contacted with a .10 to .20 BAC
22%
Name three different chemicals that are alcohols
Methyl, Ethyl and Isopropyl
Which of these is beverage alcohol
Ethynol
What is the chemical symbol for beverage alcohol
ETOH
What is the name of the chemical process in which alcohol is produced naturally
Fermentation
What is the name of the process used to produce high concentration alcohol
Distillation
Blood alcohol concentration is the number of what in every 100 milliliters
Grams
Pound for pound, the average women contains more water than the average male
false
What do we mean by he “proof” of an alcoholic beverage
Take proof divided by 2 gets the actual alcohol content of the beverage
Every chemical that is an alcohol contains what three elements
Carbon, Hydrogen, oxygen
Most of the alcohol a person drinks is absorbed into the blood via the small intestines
True
What is the name of the muscle that controls the passage from the stomach to the lower gastrointestinal tract
Pyloris
Alcohol can pass directly through the stomach walls and enter the bloodstream
True
Suppose a man and a women who both weight 160 pounds arrived at a party they both have a BAC of 0.10 chances are
He had more drink than she did
In which organ of the body does most of the metabolism of the alcohol takes place
Liver
What is the name of the enzyme that aids the metabolism of alcohol
Alcohol dehydrogenase
Once a person reaches his or her peak BAC, it will drop at a rate of about
.015 per hour
It takes about 30 minutes for the average 175 pound man to “burn off” the alcohol In one 12 ounce can of beer
False about 90 min
If DWI is a criminal offense, that standard of proof is
Beyond reasonable doubt
The purpose of implied consent is
Convince to take a chemical test
For the per se offense, chemical test result in what type of evidence
Presumptive
The per se law makes it unlawful to do what
Driving with a BAC of .08 or higher
The phase one tasks are what
Observe the vehicle in operation and any clues of possible DUI
Two common symptoms of impairment are what
slowed reaction, impaired judgment
Alcohol impairs the ability to do what among tasks
Divided attention
Three clues reinforcing the suspicions of DUI which may be observed during the stopping sequence are what
Tires to flee, no/slow response, sudden stop.
The two major evidence gathering tasks of phase two are what
Approach, observe and interview the driver while they still in the vehicle.
The major decision of phase two is what
should the driver exit the vehicle
Among the described clues an officer might see during the interview are
Slurred speech, admission of drinking, inconsistent response unusual statements
Among the described clues an officer might smell during the interview
Alcohol, marijuana, cover -up odors
There are three techniques an officer might use in asking questions that constitute simple divided attention tasks, what are they
Asking for two things simultaneously, asking interrupting or distracting questions and asking unusual questions
The count down technique requires the driver to do what
Divide attention because the driver must continuously concentrate to count backwards while trying to recall where to stop
Leaning against the vehicle is a clue to DUI which may be observed during what
The exit
The two major evidence gathering tasks of phase three are what
Administer SFST and administer a PBT or take the subjects to jail
The major decision in phase three is what
Is the subject going to jail
The entire DUI detection process culminates in what
Is the arrest/ no arrest decision
Divided attention tests requires the subject to what
Concentrate on more than one thing at a time
Among the mental and physical capabilities a person needs to drive safely are these four
Process information, short term memory, judgment/ decision making, balance, vision
The two stages of WAT are
Instruction stage and the waling stage
The two stages of the OLS are
Instructions stage and the balance and counting stage
WAT is an example of what
Divided attention field sobriety test
The WAT requires a real or imaginary line and
Take 9 heel to toe steps in a straight line and return
During what stage of WAT is the subject required to count out loud
During the walking stages
Based upon the San Diego study, the WAT test can determine whether a subjects BAC is above or below .08 what percent of the time
79%
In the WAT test, a subject who steps off the line during the first 9 steps and once during the second 9 steps and who uses arms or balance twice during the second nine steps has produced how many distinct clues
two clues each time
The WAT test has how many possible clues
8
During what stage of the OLS test must the subject maintain balance while standing on one foot
Balance and counting stage
The OLS requires the subject to keep the foot evaluated for how many seconds
30 sec
Based upon the San Diego study, the OLS test can determine whether a subjects BAC is above or below .08 what percent of the time
83%
In the OLS test, subject who sways has produced how many clues
1
In the OLS test, a subject who uses arms for balance, is hopping, and putting foot down has produced how many clues
3
What is the maximum number of clues for HGN that can appear in one eye
3
Based upon the San Diego study, The HGN test can determine whether a subjects BAC is above .08 what percent of the time
88%
The third clue of HGN is a onset of nystagmus prior to what degree
45 degrees
The purpose of PBT
Demonstrate the association of the alcohol with the observation
Two factors that produce high results on PBT
Residual mouth alcohol and breath contaminants
Two factors that produce low results on PBT
Breath sample cooling and breath sample composition
Among the described clues an officer might see during the phase two interview
Bloodshot eyes, fumbling fingers, soiled clothing, alcoholic containers
DWI detection is defined as
The entire process of identifying and gathering evidence to determine if a subject should be arrested for DWI violations
The three phases is a typical DWI contact are
Phase one- vehicle in motion
Phase two- personal contact
Phase three- pre-arrest screening
In phase one, the officer usually has an opportunity to
Observe the driver operating the vehicle
Phase three may not occur
If driver is grossly impaired, badly injured, or refuses to submit to test
Each major decision can have any one of 3 different outcomes, these are
Yes-do it
No- don’t do it
Wait- look for additional evidence
At each phase of detection, the officer must determine
Whether there is sufficient to establish legal grounds necessary to proceed to the next step of the detection process
Evidence of DWI is largely
Sensory ( sight and smell)
Law enforcement officers need a system and tools for recording field notes at scenes of DWI investigation because DWI evidence is
At the time of the DWI incident- When you pull them over as soon as the blue lights go on
SCRI for SFST
HGN- 77%
WAT- 68%
OLG- 65%
San Diego SFST
HGN- 88%
WAT- 79%
OLG- 83%
1990 Field study SFST
Colorado- 86%
Florida- 95%
San Diego- 91%
NHTSA 3 final reports
California- lab 1977
California- lab/ field 1977
Maryland, district of Columbia, Virginia, North Carolina 1983 field study
