On the Hearing-Impaired Driver mark, the background is green and the symbol is yellow.

Explanation

As specified in Appendix Table 5 (5), the Hearing-Impaired Driver mark has a white edge, a yellow symbol and a green background made of reflective material.

Guides that explain this

• Japanese Signs That Mean the Opposite of What You Assume: Crosswind, End of Restriction, Minimum Speed
• Japanese Road Signs on the Written Test: The 5 Types Explained

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