NHTSA SFST EXAM (ACTUAL EXAM) | ALL QUESTIONS AND
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS |
LATEST EXAM 2025
Question 1
In 2016, approximately what percentage of fatal motor vehicle crashes involved drivers who had
been drinking?
A) 10%
B) 18%
C) 28%
D) 40%
Correct Answer: C) 28%
Rationale: According to NHTSA data for 2016, 28% of all traffic fatalities in the United
States involved a driver with a blood alcohol concentration (BAC) of .08 g/dL or higher.
Question 2
On any typical weekend night, approximately what percentage of cars on the road are driven by
persons who are DWI?
A) 2%
B) 5%
C) 10%
D) 20%
Correct Answer: C) 10%
Rationale: Roadside surveys have consistently shown that during late-night weekend hours,
a significant portion of drivers are impaired. The estimate is that as many as one in ten
drivers may be driving while intoxicated.
Question 3
On average, how many times does a typical DWI violator drive while intoxicated before their
first arrest?
A) 10 times
B) 25 times
C) 80 times
D) 200 times
Correct Answer: C) 80 times
Rationale: Studies on DWI offenders indicate that the first arrest for DWI is often not the
first time the individual has driven while impaired. The average offender drives intoxicated
approximately 80 times before being caught.
Question 4
An alcohol-related crash at night is how many times more likely to result in a death than a non-
alcohol-related crash at night?
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A) The same likelihood
B) 2 times more likely
C) 3 times more likely
D) 5 times more likely
Correct Answer: C) 3 times higher
Rationale: Alcohol impairment significantly increases the severity of crashes, particularly
at night. The combination of impairment and reduced visibility makes nighttime alcohol-
related crashes three times more likely to be fatal.
Question 5
What are the three distinct phases of DWI detection?
A) Vehicle in Motion, Personal Contact, Pre-arrest Screening
B) The Stop, The Questioning, The Arrest
C) Observation, Interaction, Evaluation
D) Pre-stop, The Stop, Post-stop
Correct Answer: A) Vehicle in Motion, Personal Contact, Pre-arrest Screening
Rationale: The NHTSA DWI detection process is a standardized, systematic process
divided into these three distinct phases, each with its own tasks and decisions for the officer.
Question 6
What is the definition of DWI detection?
A) The administration of the Standardized Field Sobriety Tests.
B) The entire process of identifying and gathering evidence to determine if a subject should be
arrested for a DWI violation.
C) The process of obtaining a chemical test from a suspected drunk driver.
D) The observation of a vehicle weaving in its lane.
Correct Answer: B) The entire process of identifying and gathering evidence to determine
if a subject should be arrested for a DWI violation.
Rationale: DWI detection is a comprehensive process that begins with the officer's initial
observation of the vehicle and continues through the investigation and arrest decision. It is
not limited to a single action.
Question 7
What is the officer's principal decision during Detection Phase One?
A) Should I arrest the driver for DWI?
B) Should I instruct the driver to exit the vehicle?
C) Do I have sufficient grounds to stop this vehicle?
D) Is there probable cause for a search?
Correct Answer: C) Should I stop the vehicle?
Rationale: Phase One is "Vehicle in Motion." Based on the officer's observations of the
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driving behavior, the first decision that must be made is whether there is enough reasonable
suspicion of a violation to justify initiating a traffic stop.
Question 8
What is the officer's principal decision during Detection Phase Two?
A) Should I arrest the driver for DWI?
B) Should the driver exit the vehicle?
C) Should I stop the vehicle?
D) Do I need to call for backup?
Correct Answer: B) Personal contact- Should the driver exit?
Rationale: Phase Two is "Personal Contact." After making the stop and observing the
driver face-to-face, the officer must decide if there are enough indicators of impairment to
warrant further investigation by having the driver step out of the vehicle for field sobriety
tests.
Question 9
What is the officer's principal decision during Detection Phase Three?
A) Should I stop the vehicle?
B) Should the driver exit?
C) Is there probable cause to arrest the suspect for DWI?
D) Should I issue a citation or a warning?
Correct Answer: C) Pre-arrest screening- Is there probable cause to arrest the suspect for
DWI?
Rationale: Phase Three is "Pre-Arrest Screening," which includes the SFSTs. Based on the
totality of the circumstances, including the driver's performance on these tests, the officer
must decide if they have sufficient probable cause to make an arrest.
Question 10
The "illegal per se" law makes it an offense to operate a motor vehicle while:
A) Having a statutorily prohibited blood alcohol concentration (BAC).
B) Visibly intoxicated, regardless of BAC.
C) In possession of an open container of alcohol.
D) Refusing to submit to a chemical test.
Correct Answer: A) Having a BAC at or above states level
Rationale: "Per se" means "in or by itself." The per se law makes the act of driving with a
BAC at or above the legal limit a crime in itself, without the need for any other evidence of
impairment.
Question 11
True or False: The implied consent law states that by obtaining a driver's license, drivers are
deemed to have given their consent to submit to chemical testing for intoxication if arrested for
CORRECT ANSWERS | ALREADY GRADED A+ | VERIFIED ANSWERS |
LATEST EXAM 2025
Question 1
In 2016, approximately what percentage of fatal motor vehicle crashes involved drivers who had
been drinking?
A) 10%
B) 18%
C) 28%
D) 40%
Correct Answer: C) 28%
Rationale: According to NHTSA data for 2016, 28% of all traffic fatalities in the United
States involved a driver with a blood alcohol concentration (BAC) of .08 g/dL or higher.
Question 2
On any typical weekend night, approximately what percentage of cars on the road are driven by
persons who are DWI?
A) 2%
B) 5%
C) 10%
D) 20%
Correct Answer: C) 10%
Rationale: Roadside surveys have consistently shown that during late-night weekend hours,
a significant portion of drivers are impaired. The estimate is that as many as one in ten
drivers may be driving while intoxicated.
Question 3
On average, how many times does a typical DWI violator drive while intoxicated before their
first arrest?
A) 10 times
B) 25 times
C) 80 times
D) 200 times
Correct Answer: C) 80 times
Rationale: Studies on DWI offenders indicate that the first arrest for DWI is often not the
first time the individual has driven while impaired. The average offender drives intoxicated
approximately 80 times before being caught.
Question 4
An alcohol-related crash at night is how many times more likely to result in a death than a non-
alcohol-related crash at night?
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A) The same likelihood
B) 2 times more likely
C) 3 times more likely
D) 5 times more likely
Correct Answer: C) 3 times higher
Rationale: Alcohol impairment significantly increases the severity of crashes, particularly
at night. The combination of impairment and reduced visibility makes nighttime alcohol-
related crashes three times more likely to be fatal.
Question 5
What are the three distinct phases of DWI detection?
A) Vehicle in Motion, Personal Contact, Pre-arrest Screening
B) The Stop, The Questioning, The Arrest
C) Observation, Interaction, Evaluation
D) Pre-stop, The Stop, Post-stop
Correct Answer: A) Vehicle in Motion, Personal Contact, Pre-arrest Screening
Rationale: The NHTSA DWI detection process is a standardized, systematic process
divided into these three distinct phases, each with its own tasks and decisions for the officer.
Question 6
What is the definition of DWI detection?
A) The administration of the Standardized Field Sobriety Tests.
B) The entire process of identifying and gathering evidence to determine if a subject should be
arrested for a DWI violation.
C) The process of obtaining a chemical test from a suspected drunk driver.
D) The observation of a vehicle weaving in its lane.
Correct Answer: B) The entire process of identifying and gathering evidence to determine
if a subject should be arrested for a DWI violation.
Rationale: DWI detection is a comprehensive process that begins with the officer's initial
observation of the vehicle and continues through the investigation and arrest decision. It is
not limited to a single action.
Question 7
What is the officer's principal decision during Detection Phase One?
A) Should I arrest the driver for DWI?
B) Should I instruct the driver to exit the vehicle?
C) Do I have sufficient grounds to stop this vehicle?
D) Is there probable cause for a search?
Correct Answer: C) Should I stop the vehicle?
Rationale: Phase One is "Vehicle in Motion." Based on the officer's observations of the
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driving behavior, the first decision that must be made is whether there is enough reasonable
suspicion of a violation to justify initiating a traffic stop.
Question 8
What is the officer's principal decision during Detection Phase Two?
A) Should I arrest the driver for DWI?
B) Should the driver exit the vehicle?
C) Should I stop the vehicle?
D) Do I need to call for backup?
Correct Answer: B) Personal contact- Should the driver exit?
Rationale: Phase Two is "Personal Contact." After making the stop and observing the
driver face-to-face, the officer must decide if there are enough indicators of impairment to
warrant further investigation by having the driver step out of the vehicle for field sobriety
tests.
Question 9
What is the officer's principal decision during Detection Phase Three?
A) Should I stop the vehicle?
B) Should the driver exit?
C) Is there probable cause to arrest the suspect for DWI?
D) Should I issue a citation or a warning?
Correct Answer: C) Pre-arrest screening- Is there probable cause to arrest the suspect for
DWI?
Rationale: Phase Three is "Pre-Arrest Screening," which includes the SFSTs. Based on the
totality of the circumstances, including the driver's performance on these tests, the officer
must decide if they have sufficient probable cause to make an arrest.
Question 10
The "illegal per se" law makes it an offense to operate a motor vehicle while:
A) Having a statutorily prohibited blood alcohol concentration (BAC).
B) Visibly intoxicated, regardless of BAC.
C) In possession of an open container of alcohol.
D) Refusing to submit to a chemical test.
Correct Answer: A) Having a BAC at or above states level
Rationale: "Per se" means "in or by itself." The per se law makes the act of driving with a
BAC at or above the legal limit a crime in itself, without the need for any other evidence of
impairment.
Question 11
True or False: The implied consent law states that by obtaining a driver's license, drivers are
deemed to have given their consent to submit to chemical testing for intoxication if arrested for
