The Most Recent Developments in the Field of Very High Speeds in France - Electric Traction and Turbotrains

Railroads are presently operating at speeds of 200-210 km/h in France and Japan. Recent research shows that commercial trains operating at 250 km/h are now a certainity, and that speeds of 300 km/h are possible. This paper describes SNCF's experience in operating and testing such trains. Modifications needed in track structure, rolling stock, engines, electrical current collection, traction, aerodynamics, braking, and wheel-to-rail adhesion are discussed in detail.