69 Multiple choice questions
- A driver may alternate between speeding up and slowing down.
driver maneuvers onto an area other than the designated roadway.
Examples include driving at the edge of the roadway, on the shoulder,
off the roadway entirely, or straight through turn-only lanes or areas.
- a medical disorder or injury is causing the nystagmus.
- such as epilepsy, diabetes, injury to the head, or cognitive problems (dementia or Alzheimer's).
- should I stop the vehicle
when the vehicle alternately moves toward one side of the roadway and
then the other, creating a zigzag course. The pattern of lateral
movement is relatively regular as one steering correction is closely followed
- The observed vehicle is being driven without headlights during a period of
the day when headlights are required.
- pupil size
• resting nystagmus
• tracking ability
- steering, controlling the accelerator, signaling, and making decisions
(whether to stop, turn, speed up, slow down, etc.).
they can still be useful for obtaining evidence of impairment to
establish probable cause.These techniques and the following Pre-Exit
Tests do not replace the Standardized Field Sobriety Tests
- Excellent Cues (50% or greater probability that the driver is impaired)
• drifting during turn or curve
• trouble with dismount
• trouble with balance at a stop
• turning problems (e.g., unsteady, sudden corrections, late braking, improper lean angle)
• inattentive to surroundings
• inappropriate or unusual behavior (e.g., carrying or dropping object, urinating at roadside, disorderly
Good Cues (30 to 50 percent probability that the driver is impaired)
• erratic movements while going straight
• operating without lights at night
• following too closely
• running stop light or sign
• going the wrong way
- Extreme cases of weaving occur when the vehicle's wheels cross the lane lines before correction is made.
- observes the vehicle in motion.
- This cue occurs when you observe inconsistencies such
as failing to signal a turn or a lane change, signaling opposite to the turn or lane change executed, signaling
constantly with no accompanying driving action, and driving with four-way hazard flashers on.
- a first name
- Stopping problems may include stopping abruptly or too far
from a curb, at an inappropriate angle, too short or beyond the intersection limit
line, or with a jerking motion.
equipment violation, having an expired registration, or making unusual
driving actions such as weaving within a lane or moving at slower than
- • ignores the question and concentrates only on the license or registration search
• stops searching to answer question, then forgets to resume the search after answering the question
• supplies a grossly incorrect answer to the question
- : have the driver
exit, continue to interview the driver while observing for additional evidence, or conclude the interview if you
don't observe any impairment.
- is the ability of the eyes to track together when the subject attempts to follow a stimulus
moving side-to-side. The driver may have a medical condition or injury if the two eyes do not track together;
for example, if one eye has full range of motion, but the other moves only slightly or not at all.
- less important parts, often creating unexpected or dangerous situations for other drivers.
- unusual questions.
- move to a safer location
- decide whether or not to ask the suspect to step out of the vehicle
- The vehicle is following another vehicle while not maintaining the legal minimum
- asking for two things in one request
• asking interrupting or distracting questions
• asking unusual questions
- Slowed reaction
- three senses to gather evidence of alcohol
and other drug influence: sight, hearing, and smell.
- Increased Risk Taking
- • an attempt to flee • no response
• a slow response • an abrupt swerve
• a sudden stop • striking the curb or another object
- During a turn, the radius defined by the distance
between the turning vehicle and the center of the turn is greater than normal. The
vehicle may drive wide in a curve.
- • When I approach the vehicle, what do I see?
• When I talk with the driver, what do I hear, see, and smell?
• How does the driver respond to my questions?
• Should I instruct the driver to exit the vehicle?
• How does the driver exit?
• When the driver walks toward the side of the road, what do I see?
- three Phases of DUI Detection.
- The critical element in this cue is that there is no observable justification for the vehicle to stop in the traffic lane.
- The driver takes risks or endangers others by frequently or abruptly
changing lanes without regard to other motorists.
- answering a new question.
- The observed vehicle exhibits a longer than normal response to a change
in traffic signal.
- • difficulty with motor vehicle controls
• difficulty exiting the vehicle
• fumbling with driver's license or paperwork
• repeating questions or comments
• swaying, unsteady, or having balance problems
• leaning on the vehicle or other object
• slurred speech
• slow to respond to officer/officer must repeat questions
• provides incorrect information, changes answers
• odor of alcoholic beverage from the driver
- • What is the vehicle doing?
• Do I have grounds to stop the vehicle?
• How does the driver respond to my signal to stop?
• How does the driver handle the vehicle during the stopping sequence?
- The driver or occupants display inappropriate or unusual behavior such
as throwing objects from the vehicle, drinking in the vehicle, or urinating on the roadside.
- The driver is unusually slow to respond to an officer's lights, siren, or hand signals.
- slurred speech
• admission of drinking
• inconsistent responses
• abusive language
• unusual statements
- bloodshot eyes
• soiled clothing
• fumbling fingers
• alcohol containers
• drugs or drug paraphernalia
• bruises, bumps, or scratches
• unusual action
- The vehicle is moving straight ahead with the center or
lane marker between the left-hand and right-hand wheels.
- The vehicle is heading into opposing or
crossing traffic by driving in the opposing lane, backing into traffic, failing to yield the right-of-way, or
driving the wrong way on a one-way street.
- • alcoholic beverages
• cover up odors like breath sprays
• cigarette or cigar
the driver to concentrate on two or more things at the same time. They include both questioning techniques
and psychophysical tasks
swerve is an abrupt turn away from a generally straight course.
Swerving might occur after a period of drifting when the driver
approach of traffic in an oncoming lane or discovers that the vehicle is going off the road. It may also occur as the driver executes an abrupt turn to return the
vehicle to the traffic lane.
- face-to-face observation and interview of the driver
to determine if the driver may be impaired
- The observed vehicle is traveling at a speed that is 10 mph or more below the speed limit.
- driver's license and the vehicle registration.
- This cue encompasses any acceleration or
deceleration that is significantly more rapid than that required by the traffic
conditions. Rapid acceleration might be accompanied by breaking traction; rapid
deceleration might be accompanied by an abrupt stop.
- • forgets to produce both documents
• produces documents other than the ones requested
• fails to see the license, registration, or both while searching through wallet or purse
• fumbles or drops wallet, purse, license, or registration
• is unable to retrieve documents using fingertips
- Drifting is a straight-line movement of the vehicle at a slight angle to the
roadway. As the driver approaches a marker or boundary (lane marker, center line,
edge of the roadway), the direction of drift might change. Drifting can occur within
a single lane, across lanes, across the center line, or onto the shoulder
- sugar levels are too high. At this time, his or
her breath could emit an odor similar to that of an alcoholic beverage or the driver could demonstrate a
comprehension or awareness problem
- Almost Striking Object or Vehicle:
- both the subject
vehicle and the patrol vehicle have come to complete stops.
- The vehicle stops in an inappropriate location, such as
a prohibited zone, crosswalk, intersection, or sidewalk, or under inappropriate conditions such as a green
or flashing yellow traffic signal.
- Impaired Vision
- • slowed reactions
• impaired judgment as evidenced by a willingness to take risks
• impaired vision
• poor coordination (See Figure 11-2, below)
- This cue is actually one or more indicators related to the personal behavior or
appearance of the driver. Examples of specific indicators might include eye fixation, tightly gripping the
steering wheel, slouching in the seat, gesturing erratically or obscenely, holding face close to the
windshield, or protruding head from the vehicle.