The warning sign "traffic signal ahead" has a yellow background with a black border and symbol (excluding the circles that represent the signal lights).

警戒標識である「信号機あり」の標識は、地が黄色で縁線と記号が黒である（信号の灯火を表す円を除く）。

This statement is TRUE

Explanation

Appendix 3 states that sign 183 has a black border and symbol on a yellow background. The three round signal lights in the symbol are, from the right, red, yellow and green (Japanese calls the green light "ao", literally "blue").

Original text

信号機あり　183　縁線と記号は黒縁と地は黄（円形の記号は右から赤、黄、青）

Source: Rules of the Road — 交通の方法に関する教則付表3 標識・標示の種類と意味 · National Public Safety Commission Notification No.3

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The warning sign "traffic signal ahead" has a yellow background with a black border and symbol (excluding the circles that represent the signal lights).

Explanation

Original text

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