How loud can your radio or sound system be in Oregon before it becomes a violation?
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A.
There is no specific Oregon limit; volume is governed only by local noise ordinances.
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B.
It must not be audible 50 feet away from the vehicle. Correct
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C.
It must not exceed 80 decibels at any distance.
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D.
It must not be audible 100 feet away.
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.
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.
This question tests your knowledge of Distracted Driving in Oregon. Source: Oregon Driver Manual, "Distracted Driving," p.80..
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