Last Updated：2025/12/02
Semi-highways often require different maintenance standards than full freeways because of their mixed-access design.
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Semi-highways often require different maintenance standards than full freeways because of their mixed-access design.
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準高速道路は、その混合アクセス設計のため、完全なフリーウェイとは異なる維持管理基準を必要とすることが多い。
