Ch. 5 · 第２節 自動車の通行するところ
On a road with three or more traffic lanes, the rightmost lane is for overtaking only, and you do not need to return to another lane after overtaking.
[True / False · Medium]
Answer: False
Explanation
Rules of the Road, Item 2(3) states: "Even if you use the rightmost traffic lane for overtaking, once you have finished overtaking the vehicle ahead, you must promptly return to another lane." You are required to return promptly after overtaking.
Source: Ch. 5 · Section (第２節 自動車の通行するところ) · 2 道路の左寄りに走ること - (3)
See the glossary for definitions of key terms.