Definitions for "Alp Transit"
AlpTransit, also known as New Railway Link through the Alps NRLA, 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 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.