NHTSA SFST EVALUATION EXAM 2025/2026 QUESTIONS
AND SOLUTIONS MARKED A+
✔✔The purpose of PBT is to: - ✔✔
✔✔Two factors that produce high results on a PBT are - ✔✔- Residual mouth alcohol
- Breath Contaminants
✔✔Two factors that produce low results on a PBT are - ✔✔Breath sample cooling
Breath sample composition
✔✔In typical enforcement jurisdictions one DWI violation in __________ results in
arrest - ✔✔100
✔✔In the Fort Lauderdale study, police officers arrested __________% of the drivers
they contacted whose BACs were .10 to .20 - ✔✔22
✔✔Name three different chemicals that are alcohols - ✔✔methanol
ethanol
isopropanol
✔✔Which of these is beverage alcohol, intended for human consumption - ✔✔Ethanol
(ethyl) or beverage alcohol
✔✔What is the chemical symbol for beverage alcohol? - ✔✔ETOH
✔✔What is the name of the chemical process by which beverage alcohol is produced
naturally - ✔✔Fermentation
✔✔What is the name of the process used to produce high concentration beverage
alcohol - ✔✔Distillation
✔✔. Multiple choice: Blood alcohol concentration is the number of alcohol in every 100
milliliters of blood. A. Grams B. Milligrams C. Nanograms - ✔✔Grams
✔✔True or false: Pound for pound, the average woman contains more water than does
the average man - ✔✔False
✔✔What do we mean by the "proof" of an alcoholic beverage? - ✔✔twice the percent of
the beverage
✔✔Every chemical that is an "alcohol" contains what three elements - ✔✔carbon,
hydrogen, oxygen
, ✔✔True or false: Most of the alcohol a person drinks is absorbed into the blood via the
small intestine. - ✔✔true
✔✔What is the name of the muscle that controls the passage from the stomach to the
lower gastrointestinal tract? - ✔✔pylorus or pyloric value
✔✔True or false: Alcohol can pass directly through the stomach walls and enter the
bloodstream - ✔✔true
✔✔Suppose a man and a woman who both weigh 160 pounds arrived at a party and
started to drink at the same time. And suppose, two hours later, they both have a BAC
of 0.10. Chances are - ✔✔he had more to drink
✔✔In which organ of the body does most of the metabolism of the alcohol take place -
✔✔liver
✔✔What is the name of the enzyme that aids the metabolism of alcohol - ✔✔alcohol
dehydrogenase
✔✔Once a person reaches their peak BAC, it will drop at a rate of about per hour -
✔✔.015
✔✔True or False: It takes about thirty minutes for the average 175 pound man to "burn
off" the alcohol in one 12 ounce can of beer - ✔✔false
✔✔DWI detection is defined as - ✔✔the entire process of identifying and gathering
evidence to determine whether or not a suspect should be arrested for a DWI violation.
✔✔The three phases in 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
✔✔Phase Three may not occur if - ✔✔the driver is grossly impaired, badly injured, or
refuses to submit to tests.
✔✔In Phase Two, the officer must decide ________________. - ✔✔whether the driver
should exit the vehicle
✔✔Each major decision can have any one of 3 different outcomes. These are - ✔✔yes
do it now, wait, do not take action
AND SOLUTIONS MARKED A+
✔✔The purpose of PBT is to: - ✔✔
✔✔Two factors that produce high results on a PBT are - ✔✔- Residual mouth alcohol
- Breath Contaminants
✔✔Two factors that produce low results on a PBT are - ✔✔Breath sample cooling
Breath sample composition
✔✔In typical enforcement jurisdictions one DWI violation in __________ results in
arrest - ✔✔100
✔✔In the Fort Lauderdale study, police officers arrested __________% of the drivers
they contacted whose BACs were .10 to .20 - ✔✔22
✔✔Name three different chemicals that are alcohols - ✔✔methanol
ethanol
isopropanol
✔✔Which of these is beverage alcohol, intended for human consumption - ✔✔Ethanol
(ethyl) or beverage alcohol
✔✔What is the chemical symbol for beverage alcohol? - ✔✔ETOH
✔✔What is the name of the chemical process by which beverage alcohol is produced
naturally - ✔✔Fermentation
✔✔What is the name of the process used to produce high concentration beverage
alcohol - ✔✔Distillation
✔✔. Multiple choice: Blood alcohol concentration is the number of alcohol in every 100
milliliters of blood. A. Grams B. Milligrams C. Nanograms - ✔✔Grams
✔✔True or false: Pound for pound, the average woman contains more water than does
the average man - ✔✔False
✔✔What do we mean by the "proof" of an alcoholic beverage? - ✔✔twice the percent of
the beverage
✔✔Every chemical that is an "alcohol" contains what three elements - ✔✔carbon,
hydrogen, oxygen
, ✔✔True or false: Most of the alcohol a person drinks is absorbed into the blood via the
small intestine. - ✔✔true
✔✔What is the name of the muscle that controls the passage from the stomach to the
lower gastrointestinal tract? - ✔✔pylorus or pyloric value
✔✔True or false: Alcohol can pass directly through the stomach walls and enter the
bloodstream - ✔✔true
✔✔Suppose a man and a woman who both weigh 160 pounds arrived at a party and
started to drink at the same time. And suppose, two hours later, they both have a BAC
of 0.10. Chances are - ✔✔he had more to drink
✔✔In which organ of the body does most of the metabolism of the alcohol take place -
✔✔liver
✔✔What is the name of the enzyme that aids the metabolism of alcohol - ✔✔alcohol
dehydrogenase
✔✔Once a person reaches their peak BAC, it will drop at a rate of about per hour -
✔✔.015
✔✔True or False: It takes about thirty minutes for the average 175 pound man to "burn
off" the alcohol in one 12 ounce can of beer - ✔✔false
✔✔DWI detection is defined as - ✔✔the entire process of identifying and gathering
evidence to determine whether or not a suspect should be arrested for a DWI violation.
✔✔The three phases in 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
✔✔Phase Three may not occur if - ✔✔the driver is grossly impaired, badly injured, or
refuses to submit to tests.
✔✔In Phase Two, the officer must decide ________________. - ✔✔whether the driver
should exit the vehicle
✔✔Each major decision can have any one of 3 different outcomes. These are - ✔✔yes
do it now, wait, do not take action
