Rail Transport World’s Largest Railway Tunnel Has 57 Km Dug Under 2,450 M Mountain in the Alps, With Underground Stations, Temperatures Up to 46 °C, 150 Km of Auxiliary Tunnels, and Heavy High-Speed Train Operation at 549 M Altitude Alisson Ficher 09/12/2025 at 22:03
Science and Technology Chinese Manufacturer Present In São Paulo Metro Reveals Trains That Reach 400 Km/h With Technology That Reduces Drag, Vibration, And Energy Consumption Alisson Ficher 12/07/2025 at 17:43
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