它應該是有設計速度，然後也有限速。像九綿高速的隧道也有其中很長一個，叫白馬隧道，我記得當時聽導航裏說限速80公裏好像

來源: 烹小閑於 2025-12-26 17:22:54 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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