垂すい直ちょく避ひ難なん

noun

vertical evacuation

Evacuating to a higher floor or rooftop within a building, typically during a tsunami or flood, instead of moving horizontally to distant high ground.

• 津つ波なみ警けい報ほうが出でたら、海かい岸がん近ちかくのビルでは垂すい直ちょく避ひ難なんが有ゆう効こうな場ば合あいがある。

  When a tsunami warning is issued, vertical evacuation in a building near the coast can be effective.

• この地ち域いきでは、洪こう水ずい時じに垂すい直ちょく避ひ難なんできるよう、高こう層そう階かいへの避ひ難なん経けい路ろが整せい備びされている。

  In this area, evacuation routes to upper floors have been prepared so that vertical evacuation is possible during floods.