High-speed rail is a type of passenger rail transport that operates significantly faster than the normal speed of rail traffic. Specific definitions include 200 km/h (125 mph) and faster — depending on whether the track is upgraded or new — by the European Union, and above 90 mph (145 km/h) by the United StatesFederal Railroad Administration, but there is no single standard, and lower speeds can be required by local constraints.[1][2]
