---
title: Complete modernisation of the signalling for the Paris-Lyon high-speed line with SYSTRA
url: "https://www.systra.com/en/news/complete-modernisation-of-the-signalling-for-the-paris-lyon-high-speed-line-with-systra/"
type: post
date_published: 2024-12-02
date_modified: 2024-12-02
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  @type: Article
language: en-US
word_count: 424
reading_time: 3 min
canonical: "https://www.systra.com/en/news/complete-modernisation-of-the-signalling-for-the-paris-lyon-high-speed-line-with-systra/"
featured_image: "https://www.systra.com/wp-content/uploads/2024/12/sae-lyon-6-scaled.jpg"
categories:
  - Non classé
---

# Complete modernisation of the signalling for the Paris-Lyon high-speed line with SYSTRA

![Complete modernisation of the signalling for the Paris-Lyon high-speed line with SYSTRA](https://www.systra.com/wp-content/uploads/2024/12/sae-lyon-6-scaled.jpg)

101 hours to change everything: this is the network challenge that teams from
SYSTRA France, Eiffage Énergie Systèmes (lead), Saferail and TGSO have been
preparing for since 2019 as part of the LGV+ programme, also known as HPGV
(Haute Performance Grande Vitesse).

Brought into service in 1981, the Paris-Lyon line is the oldest LGV in Europe
and the busiest, with up to 13 trains per hour. Equipped with an old signalling
system, its two tracks were completely regenerated by computerised signal boxes
during an operation organised over the long weekend of November 11. The aim? To
enable migration to the interoperable ERTMS level 2 system by 2026.

### More than 400km of high-speed line to equip

SYSTRA was project manager for the design of the LGV’s 58 technical buildings,
which house the line’s computer stations, from working drawings to technical
checks. Our teams also drew up the technical plans for 33 signal boxes and took
part in the technical checks on the entire line.

![photo-groupement-sncf](https://www.systra.com/wp-content/uploads/2024/12/photo-groupement-sncf-scaled.jpg)

_Part of the SYSTRA team with SNCF Réseau during the connection weekend_

Since November 13, the signalling installations on the LGV Sud-Est line have
been controlled from a new control tower based in Lyon. Now equipped, the 409km
Paris-Lyon line will be more reliable, resilient and interoperable, enabling
trains from all over Europe to run on it. This will further increase the number
of connections on this line in 2030, with up to 16 trains per hour in each
direction.

![M-Bogaert 2](https://www.systra.com/wp-content/uploads/2024/12/m-bogaert-2-1-981x1024.jpg)

> This switchover is a world first and represents the culmination of almost five
> years of studies. SYSTRA France has been involved in all phases of the project
> since 2019. This is the first time that SNCF Réseau has outsourced so many
> tasks, and we are proud of the confidence they have shown in us.

Marc Bogaert, project manager, FIT (Railways), SYSTRA France

### ERTMS: SYSTRA in pole position for signalling changes

ERTMS, the backbone of interoperability and the harmonisation of railway
operations, is gradually being rolled out across Europe. SYSTRA is contributing
to this with numerous migration missions in Italy, Sweden and Denmark. In the
second half of 2024, SYSTRA won the ERTMS migration contract for the Channel
Tunnel and the HS1 high-speed line between London and Folkestone, which will
improve the UK’s links with the European rail system.

[OUR SERVICES OFFER IN THE HIGH-SPEED RAIL SECTOR](https://www.systra.com/en/markets/high-speed-rail/)

**Categories:** Non classé