出典:Wikipedia
出典:『Wikipedia』 (2011/02/24 17:26 UTC 版)
AlpTransit, also known as New Railway Link through the Alps NRLA (German: Neue Eisenbahn-Alpentransversale, NEAT), is a Swiss federal project aimed to build faster north-south rail links across the Swiss Alps by constructing base tunnels several hundred metres below the level of the current tunnels. For safety reasons, all the tunnels were planned to consist of two single-track bores side by side that are connected about every 300 metres with cross cuts, enabling the other tunnel to be used for escape.