High-speed railway, referred to as high-speed railway for short, refers to a railway system with high design standards and high speed for the safe running of trains. Its concept is not limited to tracks, let alone trains.

High-speed rail has different regulations in different countries, different times and different scientific research and academic fields. The Code for Design of High-speed Railway issued by China National Railway Administration defines high-speed railway as a newly-built passenger dedicated railway with a design speed of 250 km/h to 350 km/h and running the standard gauge of EMU trains.

China's National Development and Reform Commission defined China's high-speed railway as a newly-built or existing railway with a speed of 250km/h or above, and issued the corresponding Medium-and Long-term Railway Network Planning Document, which included some track lines with a speed of 200km/h in the category of China's high-speed railway network.

20 17 12 1 The English Translation and Writing Standard for Public Service was officially implemented, which stipulated that the standard English name of high-speed EMU was G series high-speed trains. In June, 5438+2020 10, and June, 265438+2020 10, the 400km/h transnational interconnected high-speed EMU, the key project of "Advanced Rail Transit", was rolled off the assembly line in CRRC Changchun Railway Bus Co., Ltd.