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| Subject | English | Basque |
| environ. | high-speed railway The term "high-speed traffic" encompasses all trains running at speeds over 200 km/h but also trains running at 200 km/h if the terrain, population density or economic reasons do not justify higher speeds | abiadura handiko trenbide |
| environ. | high-speed train Trains travelling at maximum speeds of 300kmh on special high-speed rail lines | AHT |
| environ. | high-speed train Trains travelling at maximum speeds of 300kmh on special high-speed rail lines | abiadura handiko tren |