The "Animal Crossing" sign warns that vehicles carrying animals use this section of road.

Explanation

Sign No. 84 warns that animals may run out onto the road, so you must drive carefully. It has nothing to do with vehicles transporting animals. (Source: Rules of the Road, Appendix Table 3: Types and Meanings of Signs and Markings)

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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