Ch. 8 · Motorcycles

Which of the following descriptions regarding muffler modifications is NOT mentioned in the text?

[Multiple choice · Hard]

A.Removing the muffler
B.Cutting the muffler
C.Removing the muffler core
D.Replacing the muffler core✓

Answer: D: Replacing the muffler core

Explanation

The text states "removing the muffler, cutting it, removing the muffler core, or drilling holes in the muffler." "Replacing the muffler core" is not mentioned in the text, making it the correct answer.

Driving school curriculumStage 1 – Topic 1: Driver's mindset

Momoka

All these muffler mods sound similar — I'd guess they're all mentioned in the rules, right?

Hikari

Not quite — the text mentions removing, cutting, and taking out the muffler core, but not replacing the core.

Momoka

Oh, so replacing it is the one that's not listed?

Hikari

Exactly! It's about illegal modifications, so the focus is on removing or damaging parts, not swapping them out.

Source: Ch. 8 Motorcycles · Section (第６節その他注意しなければならないこと) · １改造の禁止 - マフラーを取り外したり、切断したり、マフラーのしんを抜いたり、マフラーに穴を開けたり

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Source content excerpted from the NPA “Rules of the Road” instructional manual, in the public domain under Japanese Copyright Act Article 13(2). Explanations are AI-assisted and copyrighted by the MenkyoQuest editorial team.