Ch. 1 · Common Conduct

When a green light is displayed, motor vehicles may proceed in any direction: straight, left, or right.

[True / False · Easy]

Answer: ✓ True

Explanation

A green light indicates that you "may proceed": motor vehicles may go straight, turn left, or turn right (light vehicles and mopeds that must make a two-stage right turn follow a different method for turning right). There is no obligation to proceed.

Driving school curriculumStage 1 – Topic 2: Following traffic signals

Hikari
Hikari
Green light means go straight, but don't we need an arrow to turn?
Yui
Yui
Nope, that's true — a regular green lets you go straight, turn left, or turn right!
Hikari
Hikari
Oh, so green is actually pretty flexible!
Yui
Yui
Exactly. Green means "may proceed" in any direction — though two-stage right turns are different for small bikes!

Source: Ch. 1 Common Conduct · Section (第２節 信号) · Rules of the Road, Ch.1 §2 (Signals, Signs & Markings) / 1. Signals: Drivers must obey traffic-signal lights. When a police officer or traffic-directing officer is controlling traffic by hand signals or flashlight, those signals override the traffic-signal lights.

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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.