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Nebraska Class O Learner's License Practice Test
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Passing target: 80% (20/25)
Vehicle Safety, Documents & TowingStandalone practice
A driver removes part of the muffler system and adds a bypass pipe so that the engine sounds louder. Is this legal in Nebraska?
Correct answer: No. The muffler must work and be in constant use, and a bypass is not allowed.
Why
The muffler is on the manual's list of required equipment. The law also requires every vehicle to prevent excessive or unusual noise and to be adjusted so that it does not give off excessive fumes or smoke. A damaged exhaust system can let exhaust gas into the car, so have leaks and loud noises checked right away.
Verified against Nebraska Class O Driver's Manual · Muffler · p. 37
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