Sokol (Russian for "falcon") was a planned high speed train in Russia. It was to be a successor of the ER200 for use on the Moscow-St. Petersburg mainline, and was designed to operate at a cruising speed of 300 km/h (maximum speed 350 km/h). A prototype was built in 1997 and tested by Russian High Speed Railway Shareholding Co.
The Sokol project was cancelled in 2002. Instead of a Sokol-based design, high speed trainsets (named Sapsan) based on the Siemens Velaro were procured from Siemens in Germany. The Sapsan trains have been operating on the Moscow-St.Petersburg line since December 2009.