Traffic Control and DUI Flashcards
7 cards from real Law Enforcement practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Traffic Control and DUI flashcards as text
A preliminary breath test (PBT) administered roadside is primarily used to do what?
Answer: Establish probable cause for arrest
A PBT helps establish probable cause for arrest but is generally not admissible as conclusive evidence at trial.
Which clue is an officer trained to observe during the Walk-and-Turn test?
Answer: Stepping off the line
Stepping off the line is one of the standardized divided-attention clues in the Walk-and-Turn test.
What does a flashing red traffic signal require a driver to do?
Answer: Stop, then proceed when safe
A flashing red signal requires the driver to come to a full stop and proceed only when safe, like a stop sign.
An officer smells alcohol and sees an open container in a stopped vehicle. This primarily supports what?
Answer: Probable cause to investigate further
These observations support probable cause to continue a DUI investigation, not an automatic conviction.
What does a flashing yellow traffic signal indicate to a driver?
Answer: Proceed with caution
A flashing yellow signal means slow down and proceed with caution.
During the One-Leg Stand test, for approximately how long is a subject typically asked to hold the position?
Answer: 30 seconds
The One-Leg Stand test typically requires holding the position for about 30 seconds while counting.
What is the most accurate and direct method of measuring blood alcohol concentration?
Answer: Blood test
A blood test directly measures alcohol concentration and is generally the most accurate chemical test.