Driver's License Test Prep
Oregon Practice Distracted Driving

How loud can your radio or sound system be in Oregon before it becomes a violation?

  1. A.
    There is no specific Oregon limit; volume is governed only by local noise ordinances.
  2. B.
    It must not be audible 50 feet away from the vehicle. Correct
  3. C.
    It must not exceed 80 decibels at any distance.
  4. D.
    It must not be audible 100 feet away.
The Why

The answer is "It must not be audible 50 feet away from the vehicle."

Oregon law makes it illegal to play a radio or other sound system so loud it can be heard 50 feet away from your vehicle. The rule exists so you can hear horns, screeching tires, and sirens: sounds that warn you of approaching hazards. The 50-foot audibility test is what matters, not a decibel reading or local ordinance.

Why the others miss

The traps in the wrong answers

A. There is no specific Oregon limit; volume is governed only by local noise ordinances.

Oregon has a state-level rule: the sound must not be audible 50 feet from the vehicle. It is not left to local ordinances. Misreading: Ignores the state rule entirely and substitutes local noise ordinances for Oregon's specific 50-foot audibility standard.

C. It must not exceed 80 decibels at any distance.

The rule is the 50-foot audibility test, not a decibel measurement. Misreading: Substitutes a decibel threshold for the manual's audibility-at-distance standard; Oregon's rule is not measured in decibels.

D. It must not be audible 100 feet away.

The threshold is 50 feet, not 100. Misreading: Doubles the distance specified in the manual; the audibility threshold is 50 feet, not 100.

The Rule

This question tests your knowledge of Distracted Driving in Oregon. Source: Oregon Driver Manual, "Distracted Driving," p.80..

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