Translation guide
A traffic signal meaning stop, or a warning signal in various contexts.
The red light on a traffic signal that tells vehicles or pedestrians to stop.
A red light used as a warning, such as on machinery, in a recording studio, or indicating danger.
An area with prostitution and adult entertainment.
Do not translate 'red light' literally as 赤い光 (akai hikari) when referring to a traffic signal or warning light. Use the specific terms above.
Standard term for a red traffic light.
赤信号で止まってください。
Please stop at the red light.
赤信号を無視してはいけません。
You must not ignore the red light.
Short for 赤信号, used in casual conversation.
赤になったから止まろう。
It turned red, so let's stop.
A red warning lamp or indicator light.
機械の赤ランプが点灯した。
The machine's red light came on.
Warning light, often used in technical contexts.
ダッシュボードの警告灯が赤く光った。
The warning light on the dashboard glowed red.
Historical term for a red-light district, literally 'red-line area'.
かつてこの辺りは赤線地帯だった。
This area used to be a red-light district.
Modern term for an adult entertainment district.
新宿の風俗街は夜になると賑わう。
The red-light district in Shinjuku gets lively at night.