Ch. 5 · Driving Method

When changing your course to the right, you must give a signal about 3 seconds after you intend to change course.

[True / False · Medium]

Answer: ✕ False

Explanation

The Rules of the Road state that when changing your course to the right while continuing in the same direction, you must give a signal about 3 seconds before you intend to change course. The correct timing is 3 seconds before, not 3 seconds after.

Driving school curriculumStage 1 – Topic 10: Lane changes and similar maneuvers

Hikari
Hikari
After you change course, right? So drivers behind you know what you did.
Misaki
Misaki
No, it's 3 seconds before you change course. Signaling after is too late—you need to warn others in advance. The statement is false.
Hikari
Hikari
Ohhh, so it's a heads-up, not a recap.
Misaki
Misaki
Precisely. Always signal before your move, never after.

Source: Ch. 5 Driving Method · Section (第5節 進路変更など) · Rules of the Road, Ch.5 §5 (Changing course) — Signal at least 3 seconds before changing lanes or course; never change where a no-lane-change marking (yellow solid line on lane boundary) is in effect. Confirm safety by checking mirrors and blind spots.

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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.