TSO has participated in the installation of a linear quantity of more than 2500km of high-speed tracks on French and European territory.
- LGV Atlantic
- Lyon bypass and extension to Valence
- LGV North
- Channel Tunnel
- Mediterranean High Speed Line
- High Speed One in the United Kingdom
- LGV in Belgium
- LGV Rhine-Rhone
- LGV East European
World speed records were broken – 515.3 km/h on the LGV Atlantic line in 1990 and 574.8 km/h on the LGV East European line in April 2007 – on the tracks laid by TSO.