Practice Test Geeks(CHP) California Highway Patrol Practice Test
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DUI Detection and Enforcement Flashcards

7 cards from real CHP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 DUI Detection and Enforcement flashcards as text

  1. In California, the legal blood alcohol concentration (BAC) limit for non-commercial drivers aged 21 and older is:

    Answer: 0.08%

    California Vehicle Code 23152 sets the legal BAC limit at 0.08% for drivers 21 and older.

  2. Which of the following is a Standard Field Sobriety Test (SFST) approved by the National Highway Traffic Safety Administration (NHTSA)?

    Answer: Horizontal Gaze Nystagmus (HGN)

    NHTSA has approved three SFSTs: Horizontal Gaze Nystagmus, Walk-and-Turn, and One-Leg Stand.

  3. Under California's implied consent law, a driver lawfully arrested for DUI who refuses a chemical test will face:

    Answer: A one-year driver's license suspension for a first offense

    California Vehicle Code 23612 imposes a one-year administrative suspension for first-time chemical test refusal after a lawful DUI arrest.

  4. During the Walk-and-Turn (WAT) test, how many steps must the suspect take along the line in each direction?

    Answer: 9 steps

    The standardized WAT test requires nine heel-to-toe steps in each direction along a real or imaginary line.

  5. The BAC limit for a driver under 21 years of age in California is:

    Answer: 0.01%

    California has a zero-tolerance policy for minors; Vehicle Code 23136 sets the limit at 0.01% BAC.

  6. Which clue observed during vehicle operation is most associated with DUI detection according to NHTSA research?

    Answer: Turning with a wide radius

    NHTSA research identifies 'turning with a wide radius' as one of the highest-probability cues for DUI detection.

  7. A preliminary alcohol screening (PAS) device is typically used:

    Answer: Before arrest as an investigative tool

    A PAS device is a pre-arrest investigative tool used voluntarily to help establish probable cause; it does not satisfy the post-arrest implied consent requirement.