A snow plow comprising a snow removal mechanism acquires information about topography prior to snow accumulation, and projects, on the basis of the acquired information about the topography prior to snow accumulation, an image showing the information about the topography prior to snow accumulation onto the surface of accumulated snow to be removed by the snow removal mechanism. Such a configuration makes it possible for the driver of the snowplow to easily be made aware of the condition prior to snow accumulation.
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