High-speed rail

High-speed rail (HSR) is a type of rail transport that runs significantly faster than traditional rail traffic, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, new lines in excess of 250 km/h (155 mph) and existing lines in excess of 200 km/h (124 mph) are widely considered to be high-speed. High-speed trains mostly operate on standard gauge tracks of continuously welded rail on grade-separated right-of-way that incorporates a large turning radius in its design, however certain regions with wider legacy railways, such as Russia have sought to develop a high speed railway network in broad gauge.