# MenkyoQuest — Question ch6_q018

Chapter: Ch. 6 Hazardous Areas
Section: 第２節 坂道・カーブ
Type: Multiple choice
Difficulty: medium

## Question
Which of the following is correct regarding driving on a downhill slope?

## Options
A. On a downhill, gravity shortens the braking distance, so you may keep less following distance than on level ground
B. Keep a greater following distance
C. To prevent vapor lock, use only engine braking and never use the foot brake at all
D. Tap the brake pedal several times to warn the vehicle behind while closing the gap to the vehicle ahead

## Correct answer
B. Keep a greater following distance

## Explanation
The Rules of the Road (5) states: "On a downhill slope, keep a greater following distance. It is dangerous because the vehicle accelerates and the stopping distance becomes longer." Keeping a greater following distance on a downhill slope is correct.

## Driving school curriculum
Stage 2 – Topic 6: Natural forces acting on vehicles

## Source passage (Rules of the Road)
１ 坂道・山道 (５)

## Tags
下り坂, 車間距離, 停止距離, 安全運転

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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.