Ch. 1 · Common Conduct

Supplementary signs supplement the meaning of main signs, so all regulatory signs always have a supplementary sign attached.

[True / False · Hard]

Answer: ✕ False

Explanation

The Rules of the Road states that supplementary signs are sometimes used to supplement the meaning of main signs such as regulatory signs. As an exception, there are many main signs that do not require supplementary signs or do not use them. The expression "usually attached below the main sign" also indicates that they are not always attached.

Driving school curriculumStage 1 – Topic 2: Following traffic signals

Hikari
Hikari
Oh, so every regulatory sign comes with a supplementary sign underneath, right?
Yui
Yui
Actually, that's false! Supplementary signs are only used *sometimes* to add detail—plenty of main signs stand alone just fine.
Hikari
Hikari
Wait, so that word 'always' was the trap?
Yui
Yui
Exactly! Watch out for absolutes like 'always'—they're red flags on these questions.

Source: Ch. 1 Common Conduct · Section (第2節 信号) · Rules of the Road, Ch.1 §2 (Obeying signals, signs & markings) — Drivers and pedestrians must obey traffic-signal lights, road signs, and road markings. The types of signals, signs, and markings and their meanings are listed in Appendix 1 and 3.

🤖 Dig deeper with AI

Send this question's context to ChatGPT for a richer explanation. The prompt also asks the AI to point you back to this chapter's practice quiz.

🚀 Ask ChatGPT

If the button doesn't open ChatGPT, tap Copy and paste it into Claude, Gemini, or any other LLM you prefer. On a free plan, Claude (claude.ai) tends to produce more accurate explanations that respect this site's content.

← Back to all Ch. 1 questions

See the glossary for definitions of key terms.

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.