Ch. 1 · Common Conduct

The "slippery" warning sign only calls for caution when the road surface is wet, so when the road surface is dry you may drive through without paying attention to this sign.

[True / False · Hard]

Answer: ✕ False

Explanation

According to the Rules of the Road, warning signs alert road users in advance to hazards on the road and situations that call for caution. The "slippery" sign gives advance notice that the road at that location is slippery, so you need to heed the sign as you drive through even if the road surface is dry at the time. The idea that "you can disregard it if the road is dry" is incorrect.

Driving school curriculumStage 1 – Topic 2: Following traffic signals

Hikari
Hikari
The road's dry right now, and that sign only matters when it's wet anyway, so I can just ignore it, right?
Yui
Yui
That's false. Warning signs tell you in advance about hazards on the road—'slippery' means this stretch of road is slippery, so you still need to heed the sign even if the surface is dry when you pass.
Hikari
Hikari
Wait, so the sign is warning me about the road itself, not just what it looks like this second?
Yui
Yui
Exactly. Never think 'dry' means 'no problem'—pay attention to the sign every time you drive through.

Source: Ch. 1 Common Conduct · Section (第２節 信号) · Rules of the Road, Ch.1 §2 / 2(4) Warning signs alert road users in advance to hazards or situations on the road that require caution. Types and meanings are listed in Appendix 3(1).

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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.