TRANSPORT|land transport|land transport
- buntollán Tagairt "Rialachán (AE) Uimh. 1316/2013 lena mbunaítear an tSaoráid um Chónascadh na hEorpa, lena leasaítear Rialachán (AE) Uimh. 913/2010 agus lena n-aisghairtear Rialachán (CE) Uimh. 680/2007 agus Rialachán (CE) Uimh. 67/2010, CELEX:32013R1316/GA ;Faomhadh an téarma seo mar chuid de Thionscadal Lex"
- ga
- base tunnel | basis tunnel
- en
- Sainmhíniú type of tunnel, mainly a railway tunnel, that is built through the base of a mountain pass Tagairt "Wikipedia. Base tunnel, https://en.wikipedia.org/wiki/Base_tunnel [23.4.2018]"
- Nóta "When originally constructed, classical railway lines through mountainous terrain tried to minimize tunneling, due to technical limitations and expense, and therefore required long and steep gradients and many curves, or even spirals. Tunnels were generally short and much higher up the mountain. Such tunnels are sometimes also called culmination tunnels, especially in the presence of a base tunnel through the same mountain massif.The base tunnels take the opposite approach, minimizing or eliminating gradients and curves with the consequence of having longer tunnels but shorter total distances to travel. Wikipedia. Base tunnel, https://en.wikipedia.org/wiki/Base_tunnel [23.4.2018]"