20,000 motorcycle deaths could have been spared by helmet laws, says US study米調査、ヘルメットの着用義務化で 2万人以上の命を救えた可能性を指摘
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A new study suggests that stricter helmet laws could have prevented thousands of deaths from motorcycle crashes in the U.S. since the mid-1970s.
The study was announced on Oct. 16 by the Insurance...