# MenkyoQuest — Question ch4_q003

Chapter: Ch. 4 Pre-Drive Conduct
Section: 第１節 運転に当たつての注意
Type: True/False
Difficulty: hard

## Question
A driver whose hearing in both ears is impaired to the extent that they cannot hear an 80-decibel warning horn at a distance of 10 meters, even with a hearing aid, must display a hearing impairment mark.

## Correct answer
False

## Explanation
The Rules of the Road, Chapter 4, Section 1, 1(1)F clearly states "90 decibels." The "80 decibels" in the question is incorrect; the correct value is "90 decibels." This is a trick question that requires accurate recall of the numerical value.

## Driving school curriculum
Stage 1 – Topic 1: Driver's mindset

## Source passage (Rules of the Road)
1(1)カ 両耳の聴力が補聴器を用いても10メートルの距離で90デシベルの警音器の音が聞こえない程度の聴覚障害のあることを理由に免許に条件を付されている運転者

## Tags
聴覚障害者マーク, 90デシベル, 補聴器, 警音器

## Related links
- HTML version: https://www.menkyoquest.com/en/q/ch4_q003
- Try the full chapter quiz: https://www.menkyoquest.com/en/quiz/ch4
- Home: https://www.menkyoquest.com/en/

---
Source basis: National Police Agency's official Rules of the Road manual (Public Domain under Article 13 §2 of Japan's Copyright Act).
Copyright on AI-drafted explanations belongs to the MenkyoQuest team.