LGV Sud-Est

LGV Sud-Est
The LGV Sud-Est in Cruzilles-lès-Mépillat
Overview
StatusOperational
Owner
Locale
Termini
Service
SystemSNCF
Operator(s)SNCF
History
Opened
Technical
Line length409 km (254 mi)
Number of tracksDouble track
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification25 kV 50 Hz[1]
Operating speed300 km/h (190 mph)
SignallingTVM-300 (current), ETCS Level 2 (future, in deployment)[2]
Maximum incline3.6%
Route map

Line from Paris-Gare de Lyon enlarge…
29.4
0.0
Line to Dijon enlarge…
17.1
LGV from Marne-la-Vallée enlarge…
42.7
River Seine (134 m)
44.0
MontereauFlamboin-Gouaix
117.2
Line ParisDijon enlarge…
Line from Sens enlarge…
162.1
Line to Montbard and Dijon enlarge…
273.8
Le Creusot TGV TGV inOui
274.6
NeversChagny
334.0
Mâcon Loché TGV TGV inOui
Line from Dijon enlarge…
336.0
Line to Lyon enlarge…
337.5
River Saône (340 m)
from Mâcon
337.7
to Bourg-en-Bresse
380.5
LGV Rhône-Alpes to Valence enlarge…
389.3
from Bourg-en-Bresse
to Lyon Part-Dieu

The LGV Sud-Est (French: Ligne à Grande Vitesse Sud-Est; English: South East high-speed line) is a French high-speed rail line which connects the Paris and Lyon areas. It was France's first high-speed rail line, it has also been the most widely used line in France as well as being the busiest high-speed line in Europe.[3]

Construction of LGV Sud-Est commended in 1976, although development of the associated technologies was underway for over a decade prior. Several key decisions, such as the use of overhead electrification instead of gas turbines, was influenced by geopolitical events as much as by innovations. On 22 September 1981, the inauguration of the first section between Saint-Florentin and Sathonay-Camp was attended by President François Mitterrand on 22 September 1981. It marked the beginning of the re-invigoration of French passenger rail service; ten million passengers travelled on LGV Sud-Est within its first ten months of operation while domestic flights between Paris and Lyon declined substantially due to the effectiveness of TGV services.

The high rate of return generated by LGV Sud-Est quickly motivated the construction of other LGVs. Several of these have extended the reach of the high-speed trains that use LGV Sud-Est, such as the LGV Rhône-Alpes and LGV Méditerranée to the south and the LGV Interconnexion Est to the north; these connecting lines shortened journey times between Paris and the southeast of France (Marseille, Montpellier and Nice), Switzerland and Italy, as well as between the southeast and the north and west of France, the United Kingdom and Belgium. The LGV Rhône-Alpes, Sud-Est and Méditerranée, taken as a whole, were also nicknamed the City To Coast (C2C) Highway ("Ville à la Mer").[citation needed]

History

Following the creation of SNCF's research department in 1966, one of its primary endeavours was code-named "C03: Railways possibilities on new infrastructure (tracks)".[4] In 1971, the "C03" project, which had been also garnered the name "TGV Sud-Est", was validated by the French government. Following the 1973 oil crisis, which had substantially increased oil prices, it was decided to favour electric traction over gas turbine propulsion; as a consequence, high speed pantographs and overhead electrification was developed for use on what would become LGV Sud-Est.[4][5]

During 1976, construction of infrastructure for LGV Sud-Est commenced.[6] One year later, the SNCF placed its initial production order with the rolling stock manufacturing group AlstomFrancorail–MTE for 87 TGV Sud-Est trainsets that would later run on the line.[4]

On 27 September 1981, LGV Sud-Est was opened to the public.[7] It was an instant success, ten million passengers were recorded as travelling on the line within its first ten months. As a result, domestic flights between Paris and Lyon declined substantially as the travelling public switched to using the TGV instead.[7]

By 2020, LGV Sud-Est was still reportedly the most widely used line in France as well as being the busiest high-speed line in Europe.[3] The line carried a third of all railway traffic in France, including up to 300 TGVs per day, and carried 52 million passengers through 2019.[3]

Timeline

Route

The line crosses six departments, from north to south:

The TGV system is compatible with the regular rail network, avoiding the need for new infrastructure construction to reach existing train stations in the dense urban areas of Paris and Lyon.[7]

The distance from Paris (Gare de Lyon) to Lyon (Part-Dieu) is 425 km (264 mi). The LGV route is 409 km (254 mi) long; by avoiding built-up areas between Paris and Lyon (particularly Dijon) this enables a route 87 km (54 mi) shorter than the regular line, which is 512 km (318 mi) long. There are no tunnels.

The line includes various connectors to the regular rail network:

These last three are used by service trains or in order to divert passenger trains if needed.

The line runs next to the A5 autoroute for 60 km (37 mi) and the N79 road for 15 km (9.3 mi). For its full length, a 5 m (16 ft)-wide area has been reserved for a telecommunication artery.[citation needed]

Line specifics

A TGV running on the line on 24 May 1987, in Saint-Germain-Laval, Seine-et-Marne

The line has a surface area of 16 km2 (6.2 sq mi) – in comparison Charles de Gaulle Airport occupies 32 km2 (12 sq mi) – with an average width of 40 m (130 ft).[citation needed] Platforms are 13 m (43 ft) wide, with a space between track centres of 4.2 m (14 ft). The line was designed for a nominal speed of 300 km/h (190 mph), with a minimum radius curve of 4,000 m (13,100 ft) – although seven curves were made to a smaller radius, but no less than 3,200 m or 10,500 ft.[citation needed]

In total, the line comprises 847 km (526 mi) of track. This is formed by UIC 60 (60.3 kg/m [40.5 lb/ft]) rails placed in 288 m (945 ft) lengths, welded in place (with certain segmented sections). The 2.41 m (7 ft 11 in) concrete sleepers are formed of two blocks of concrete tied together by a metal strut. There are 1660 sleepers per kilometre.

Traction power is supplied by eight EDF substations at 25 kV AC, 50 Hz. The catenary is fed by an inverted phase "feeder" cable, which is equivalent to a 50 kV supply and reinforces the available power, enabling a single trainset to draw up to 14 MW.[citation needed]

Signalling relies on high-frequency track circuits that transmits signals directly to the driver's console, known as Transmission Voie-Machine (TVM). Drivers are unable accurately identify traditional track-side railway signals positioned. While there are lineside marker boards indicating the limits of each block section, there no traditional signals as such.[citation needed] The TVM system is set to be replaced by the newer European Rail Traffic Management System (ERTMS).[10][11]

The highest point on the line is 489 m (1,604 ft) above sea level, near the town of Liernais, 55.5 km (34.5 mi) north of Gare du Creusot. This is near the range dividing the Seine and Loire river valleys, and not far from the Rhône river valley.[citation needed]

Stations

The LGV Sud-Est serves the following stations:

Le-Creusot and Mâcon-Loché are basic stations situated away from built-up areas. They have four tracks, with the two central tracks being reserved for through trains, and the side tracks serving stopping trains on two side platforms.

Costs

Item Cost, nominal[12]
(in 1984 francs)
Cost, real
(in 2007 euros)
Construction of superstructure and infrastructure 7.85 billion 2.0 billion
Construction of superstructure and infrastructure, with land purchase 8.5 billion 2.15 billion
Rolling stock 5.3 billion 1.35 billion
Total 13.8 billion 3.5 billion

LGV Sud-Est, akin to other early French high speed lines, was financed mainly by debt held by SNCF.[13] The decision to proceed with these early LGVs, and the order in which they were constructed, was heavily influenced by evaluations of their profitability, not only in pure financial terms but also the estimated social benefits. Expectations for LGV Sud Est had included a minimum 12 percent financial rate of return; this was exceeded as a result of the line's high rate of usage, both in terms of traffic and revenue generation.[13] The achieved financial rates of return, which have been estimated to have been between 15 percent and 30 percent per year in socioeconomic terms, permitted the LGV to be fully amortised by the end of 1993 after 12 years of operational use; unlike several of France's later LGVs, no subsidies were used. The financial success of LGV Sud Est encouraged the French government commit further large financial contributions towards the construction of additional high speed lines.[14][15][7]

During the mid-to-late 1990s, the track of the LGV Sud-Est was renewed at a cost of FRF 2 billion,[12] or about €300 million. Maintenance and renewal work is typically performed at night wherever possible to impact a minimal amount of traffic. Between 2020 and 2023, a comprehensive modernisation of the line was performed at a cost of 300 million euros; it was part of a wider programme of works aimed at increasing both traffic and regularity on key parts of France's LGV network.[3][16]

See also

References

Citations

  1. ^ "RFF - Map of electrified railway lines" (PDF). Archived from the original (PDF) on 2016-05-16. Retrieved 2010-12-04.
  2. ^ "2024 : une année clé pour le projet LGV+ Paris-Lyon". SNCF Reseau. SNCF SA. Retrieved 5 November 2024.
  3. ^ a b c d "Modernization of the Paris-Lyon high-speed line: an extraordinary project". batinfo.com. 7 September 2020.
  4. ^ a b c Picard, Jean François; Beltran, Alain. "D'où viens tu TGV" (PDF) (in French) – via archivchemindefer.free.fr.
  5. ^ "History of TGV". decomotiv.com. Retrieved 19 May 2024.
  6. ^ Lacôte, François (1991). "TGVs: France's high-speed trains". Impact of science on society. 162: 165–175 – via unesdoc.unesco.org.
  7. ^ a b c d e "TGV - The French High-speed Train Service". BBC. 22 April 2002.
  8. ^ Guigueno, Vincent (January 2008). "Building a High-Speed Society: France and the Aérotrain, 1962-1974". Technology and Culture. 49 (1). The Johns Hopkins University Press: 21–40 – via jstor.org.
  9. ^ Perren, Brian (October 1983). "TGV: the completion of a dream". Rail Enthusiast. EMAP National Publications. pp. 35–40. ISSN 0262-561X. OCLC 49957965.
  10. ^ "Hitachi Rail STS wins LGV Sud-Est interlocking contract". Railway Gazette International. 19 December 2019.
  11. ^ Barrows, Keith (26 April 2018). "EU funds LGV Sud Est ERTMS rollout". International Railway Journal.
  12. ^ a b Quid.fr, Autres TGV Archived 2007-12-12 at the Wayback Machine
  13. ^ a b Liesel, Sloan and Douglas 2013, p. 9.
  14. ^ Liesel, Sloan and Douglas 2013, pp. 9-11.
  15. ^ Freemark, Yonah (11 July 2010). "For French High-Speed Rail, a Lower-Cost Future Pondered". thetransportpolitic.com.
  16. ^ Smith, Kevin (17 October 2020). "Work underway on LGV Sud Est improvements". International Railway Journal.

Sources

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