Question 4373
To avoid noise pollution, motorcycle riders should...
- make sure the exhaust pipe and the muffler are always in good condition.
- ride with an open exhaust.
- take care of only the muffler; the exhaust pipe does not affect noise.
Show answer and explanation
Correct answer: make sure the exhaust pipe and the muffler are always in good condition.
An exhaust pipe or muffler in poor condition makes more noise, so you need to take care of both and repair them as soon as they develop a problem. The muffler is part of the exhaust pipe, and the entire pipe affects noise. An open exhaust is prohibited.