Translation guide
A traffic signal is a device that controls the flow of vehicles and pedestrians at intersections using colored lights. In Japanese, the most common term is 信号 (shingou), which can refer to both the signal itself and the light it displays. More specific terms exist for different contexts.
The standard device at intersections with red, yellow, and green lights.
The most common and versatile word for a traffic signal. It can refer to the physical device or the light it shows.
Turn right at the next traffic signal.
The traffic signal turned red.
A more formal or technical term for a traffic signal, explicitly meaning 'traffic signal'. Used in official contexts or when clarity is needed.
Installation of traffic signals is planned.
Refers specifically to the physical traffic signal device or machine. Often used in technical or descriptive contexts.
A new traffic signal device was installed.
The colored light displayed by the signal, especially when referring to its color.
Also used to refer to the light itself. Context usually makes it clear whether the device or the light is meant.
Let's cross when the light turns green.
Literally 'the color of the signal', used when specifically discussing the light color.
The traffic light color changed.
A signal specifically for pedestrians, often showing a walking figure or hand.
A signal used in railway systems to control train movements.
The general term for a railway signal.
The train was delayed due to a railway signal failure.
In everyday conversation, 信号 (shingou) is sufficient for both the physical traffic signal and the light it displays. Context usually clarifies the meaning. If you need to be specific, use 信号機 (shingouki) for the device and 信号の色 (shingou no iro) for the light color.
That traffic signal is always congested.
The light turned yellow.
While 交通信号 (koutsuu shingou) is a valid term, it sounds formal and is less common in daily speech. Stick to 信号 (shingou) for most situations.
cross at the traffic signal
That pedestrian signal makes a sound.