Driver's License Test Prep
California Practice DUI & Impaired Driving

You take a prescription medication before driving. It affects your ability to drive safely. Under California DUI law, which statement is true?

  1. A.
    The law treats prescriptions the same as illegal drugs. Correct
  2. B.
    A prescription protects you from a DUI charge.
  3. C.
    A DUI applies only if you took more than the recommended dose.
The Why

The answer is "The law treats prescriptions the same as illegal drugs."

California treats prescription and over-the-counter medications the same as illegal drugs when they impair driving. Choice B rests on the belief that a doctor's authorization protects the driver from a DUI, a habit imported from how prescriptions work in other legal settings.

Why the others miss

The traps in the wrong answers

B. A prescription protects you from a DUI charge.

A legal prescription does not shield an impaired driver from DUI charges. This answer treats a valid prescription as authorization to drive, borrowing the way prescriptions clear people in other legal contexts.

C. A DUI applies only if you took more than the recommended dose.

Impairment triggers a DUI whether or not the dose was within label limits. This answer reads the printed dose ceiling on the pill bottle as the DUI trigger, when the law instead keys on whether driving is impaired.

The Rule

This question tests your knowledge of DUI & Impaired Driving in California. Source: California Driver Manual, "SECTION 9. Alcohol and Drugs," p.71..

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