British Rail Class 399

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British Rail Class 399
Citylink
399206 Parkgate.jpg
Class 399 at Parkgate in April 2019
In service14 September 2017 (2017-09-14)–present
Manufacturer Vossloh España
Built at Valencia, Spain
Family name Citylink
Constructed2014–2015
Number built7
Fleet numbers399201–399207
Capacity236 (96 seated, 140 standing)
Operators Sheffield Supertram
DepotsNunnery (Sheffield)
Lines served
Specifications
Car body constructionStainless steel
Train length37.200 m (122 ft 0.6 in)
Width2.650 m (8 ft 8.3 in)
Height3.720 m (12 ft 2.5 in)
Floor height425 mm (1 ft 4.7 in) at doors
DoorsDouble-leaf sliding plug,
2 per side per end section
Articulated sections3
Wheel diameter720 mm (28 in)
Maximum speed62 mph (100 km/h)
WeightApprox. 66 t (65 LT; 73 ST)
Steep gradient 10%
Traction system ABB IGBT-VVVF [1]
Traction motors 6 × 145 kW (194 hp)
Power output870 kW (1,170 hp)
Acceleration 1.15 m/s2 (2.6 mph/s)
Deceleration
  • Service: 1.2 m/s2 (2.7 mph/s)
  • Emergency: 2.67 m/s2 (6.0 mph/s)
Electric system(s) 750 V DC and 25 kV 50 Hz AC overhead line
Current collector(s) Pantograph
UIC classification Bo′+2′Bo′+Bo′
Minimum turning radius
  • Horizontal: 22 m (72 ft 2 in)
  • Vertical: 165 m (541 ft 4 in)
Safety system(s)
Track gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge
Notes/references
Sourced from [2] [3] unless otherwise noted.

The British Rail Class 399 Citylink is a type of rail vehicle built by Vossloh on its Citylink platform for operation by Sheffield Supertram. Primarily a low-floor tram, it is also capable of being used on the National Rail network; the Class 399 is the first such tram-train to see operational use in the United Kingdom.

Contents

In 2013, an order was placed with Vossloh for the construction of a batch of seven tram-trains for Supertram. It operates as a pioneering tram-train hybrid vehicle as part of an initial pilot of the operation of such vehicles. [4] The launch of live services using the Class 399 was repeatedly delayed, reportedly due to planning and development-related difficulty experienced by Network Rail, who were responsible for the installation of additional track and other infrastructure-related changes to accommodate the tram-trains upon the heavy rail network, as well as a necessary full track replacement programme performed by Supertram.

In January 2016, the first tram-train commenced live testing on the Supertram network. The type first entered passenger service on 14 September 2017, but were initially restricted to only some sections of Supertram's network as further work was still required on other parts, including Network Rail lines. Full tram-train service began on 25 October 2018. The results of the trials may become a decisive factor on the adoption of tram-train technology at various other sites across the country.

History

Class 399 at Cathedral tram stop Class 399 at Cathedral tram stop.jpg
Class 399 at Cathedral tram stop

Background

In 2008, the Department for Transport (DfT) announced plans to operate a trial tram-train service using the Penistone line in South Yorkshire. As initially envisioned, the trial was to function as two-year pilot programme, as the service would be the first use of combined tram-train operations anywhere in the UK. [5] The scheme was jointly delivered by the DfT, Sheffield Supertram, Network Rail, Northern Rail, and the South Yorkshire Passenger Transport Executive (SYPTE). The adoption of tram-trains would allow Supertram services to travel on the national rail network, which had the advantages of opening up new routes, integrating multiple transit networks together, and potential for further expansion. [5]

In addition to the local impact of the scheme, it has been anticipated that the trial could be invaluable to transport operators through the United Kingdom. Careful scrutiny is to be applied to the service's reliability and popularity; in the long run, the determined level of success could be a decisive factor on the further implementation of tram-train technology across the country. [5] According to Rob Carroll, major projects manager at Supertram, the tram-train project team has been approached by multiple organisations, highlighting the interest expressed by representatives of the Manchester Metrolink, transport managers studying options for a rail link to Glasgow Airport, and personnel from South Wales. The prospect of being able to readily combine heavy and light rail networks together is considered to be an attractive prospect in some cities. [5] [6] [7]

Planning and selection

The originally-intended route for the tram-train trials was an unelectrified line and as such, this would have required the procurement of a number of specially-built vehicles due to the necessitity for them to be diesel powered, as there were no plans to include electrification as part of the trial. [8] Originally, the trial was intended to start operating for two years from 2010, but in 2009, the proposal was revised as the original plan had not included any on-street running. The revised proposal envisaged the use of the Supertram network, using a new link constructed to connect it to the Dearne Valley line to Rotherham, that would then allow trams to operate on both heavy rail and light rail lines. As part of the project, the line would be electrified, allowing more cost-effective electric vehicles to be procured. [9] In May 2012, approval for the tram-train trial was granted by the DfT, along with a commitment of £58 million towards the construction of a 400-metre (1,312 ft 4 in) chord to serve as the link between the Network Rail and Supertram networks, as well as the electrification of 8 miles (13 km) of the route to Rotherham and the purchase of seven new tram-train vehicles. [4]

In June 2013, Vossloh España was selected to construct the new tram-trains with the first scheduled to be delivered in September 2015. [10] Under Supertram's numbering system, the seven units were numbered 201–207. In order to operate onto the mainline railway network, they were additionally registered as Class 399 units 399201–399207 under the TOPS scheme. The first was delivered in December 2015. [11] The last was delivered in November 2016.

Delays and issues

The tram-train service has been delayed many times due to different factors. While the first deliveries of the tram-trains themselves were due to happen in September 2015, [10] this deadline was subsequently put back to December 2015. [12] In October 2015, it was announced that the tram-train project had been delayed by one year. A Network Rail spokesman stated at the time that the project would be delayed until 2017 and attributed this to the organisation having to wait for the needed permission of the transport secretary to carry out the construction of new track at Tinsley. [13]

In May 2016, the project was effectively delayed once again when it was announced that a 2017 start date would "not be possible". [14] Speaking at the time, Network Rail referred to the complexity present in elements of the design and planning of the envisioned tram-train operations, and that a thorough review of the programme was in the process of being conducted by the organisation and SYPTE. [14] Amongst the various changes required in advance of the new unit's operational use, the entirety of the Supertram network had to be re-profiled. [5] In November 2016, while in the midst of a review of the associated programme of works, it was announced that full tram-train services would commence in summer 2018, having encountered factors which had necessitated yet another delay. [15]

In December 2017, a highly-critical parliamentary report on the developing tram-train programme was released. [16] According to the report, costs had risen to £75.1 million, around five times of the original £15 million budget originally allocated for the programme. It also found there to have been a "high level of risk and uncertainty" and ""unacceptable cost increases and delays", while the DfT were criticised for failing to question if the project still offered value for money or fulfilled its goals. [16]

Design

The Class 399 is a dedicated tram-train unit. The primary purpose of the type is to operate the tram-train service between Sheffield and Rotherham; as such, it is designed to run on both the National Rail and Supertram networks. [5] Each vehicle is composed of three articulated sections, which are fitted with a total of three motorised bogies and one unpowered trailer bogie, complete with a pneumatic suspension system. They are bi-directional units, which eliminates any need for turnaround facilities to be installed; rear-view camera displays are also present in the driver's cab for improved visibility and situational awareness. [5]

To suit the two different networks, the Class 399 are dual voltage vehicles, capable of operating on both the 750 V DC OHLE of Supertram's network, and the 25 kV 50 Hz AC OHLE that is the standard on the National Rail network. Although the route to Rotherham will be electrified to the 750 V DC standard used on the rest of the Supertram network, the installation of dual voltage capability is to allow the vehicles to be future-proofed if the Midland Main Line north of Sheffield is electrified. [17] [5] The process for switching between the two different power supplies is automated by an integrated Automatic Power Control (APC) system. This system is triggered by a series of magnets which have been embedded at key locations on the ground outside of the track, while the two power supplies are intentionally separated by a neutral section of track. [5] In practice, the vehicle travels over the first magnet to trigger the circuit breakers to open, after which it coasts through the short neutral section before the new voltage is detected and the circuit breakers are closed again. While the APC provides an automated process for this, there is a manual override allowing the driver to close the circuit breaker if circumstance ever requires this to be done. [5]

The Supertram lines and the National Rail network also use vastly different signalling systems. [5] When travelling on the Supertram network, signals are primarily provided to the driver visually; the tram-trains also make use of the same vehicle identification system (VIS) as used by the conventional trams. In addition, for compatibility with running upon the National Rail network, the tram-trains are fitted with Train Protection & Warning System (TPWS) and GSM-R equipment. [5] While TPWS is to be active during all operations, manual intervention by the driver is required for the activation of the GSM-R terminal each time one of the vehicles is driven onto the heavy rail line. [5]

In order for the vehicle to be capable of running on both on-street tramways and the National Rail network, the profile of the wheels were required to suit the particularities of the rails on both systems. [5] The design team collaborated with the University of Huddersfield, to develop a specially-designed wheel that fits both rail head profiles, which is claimed to reduce the rate of wear and mitigate against the risk of derailment. However, as the wheel profile was non-standard, permission had to be obtained from the Rail Safety and Standards Board before the new design could be adopted and subject to real-world testing. [5] As a result of the vehicles being operated upon a heavy rail line, they are subject to higher crashworthiness standards than had been imposed upon the rest of Supertram's fleet. As a result, these units will be the only ones capable of operating the tram-train service to Rotherham. [10] [18]

Operation

Being tested at Donetsk Way, April 2017 Supertram 399202 Donetsk.jpg
Being tested at Donetsk Way, April 2017

In January 2016, the first tram-train commenced active testing on the Supertram network. [5] On 14 September 2017, the first Class 399 officially entered passenger service in a ceremony attended by the Parliamentary Under-Secretary of State for Transport Paul Maynard and various transport officials and representatives from Sheffield Children's Hospital. [19] [20] Tram 399202 was named Theo, after the mascot of the city's children's hospital charity; in addition, tram passengers who travelled over the next two days made donations to the charity in place of the standard fare. [19]

In addition to their tram-train functionality, the fleet has also been used to strengthen Supertram's existing assets, which has not been previously expanded since having been originally commissioned in 1992. The vehicles have been fully integrated into Supertram's fleet, and are maintained by the manufacturer at the main Nunnery depot. [21] The Rotherham service operates three times per hour between Cathedral and Rotherham Central, before terminating at a new stop at Rotherham's Parkgate retail park, with a total journey time of approximately 25 minutes. [12] A total of three vehicles will be required for this service level; three of the remainder will be used to increase capacity on the rest of the network, with the seventh in maintenance. [17]

Initially however, four of the seven vehicles will be dedicated to the Rotherham service, with the other three used for fleet expansion. This is owing to the different wheel profile required for running on National Rail tracks as opposed to Supertram's own. This is envisaged to be the case until Supertram has completed its full track replacement programme. [22] In May 2018, testing began on the tram-train aspects of the vehicle itself. [23] The full Rotherham service started running on 25 October 2018. [24]

Incidents

Fleet Status

NumberNameStatusWheel ProfileNotes
399201-OperationalTram-Train
399202TheoOperationalTram-Train
399203-OperationalTram-Train
399204-OperationalTram-TrainReturned from Spain in November 2019, [33] returned to service 18 January 2020
399205-OperationalTram-Train
399206-OperationalTramRefitted with tram wheel profile and re-entered service on tram only services in September 2020 [34]
399207-OperationalTram

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References

  1. ↑ Compact Converter BORDLINE CC400 MS (PDF). Turgi: ABB Switzerland. 16 February 2018. 3BHS262329 Rev C.
  2. ↑ Citylink Tram Train (PDF). Bussnang: Stadler Rail Group. June 2016. TTSYPTE0616e.
  3. ↑ Citylink Dual-Voltage Tram-Train Sheffield (PDF). Albuixech: Vossloh España. June 2013. Archived from the original (PDF) on 5 March 2016.
  4. 1 2 "UK approves Tram Train pilot for South Yorkshire". RailwayTechnology. Net Resources International. 21 May 2012. Retrieved 20 February 2015.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Johnson, M. (23 December 2015). "Sheffield tram-train: Making square pegs fit". Rail Engineer. Coalville: Rail Media. Archived from the original on 21 February 2016.
  6. ↑ Dickins, S. (30 June 2015). "Analysis: Getting the South Wales Metro". BBC News. British Broadcasting Corporation.
  7. ↑ Bynorth, J. (20 November 2017). "New lifeline for multi-million pound Glasgow Airport tram-train link". The Herald. Newsquest Media Group.
  8. ↑ "Tram-Train Trials, United Kingdom". RailwayTechnology. SPG Media. Archived from the original on 27 September 2008.
  9. ↑ "City tram-trains trial unveiled". BBC News. British Broadcasting Corporation. 15 September 2009. Retrieved 20 February 2015.
  10. 1 2 3 "Vossloh España to deliver seven tram trains to SYPTE in UK". RailwayTechnology. Kable Intelligence. 21 June 2013. Archived from the original on 24 September 2015.
  11. ↑ "First tram-train heads for Sheffield". Railway Gazette. Sutton: DVV Media International. 20 November 2015. Archived from the original on 19 December 2015.
  12. 1 2 Greenwood, V. (28 October 2015). "Tram-Train Frequently Asked Questions" (PDF). South Yorkshire Passenger Transport Executive. Archived from the original (PDF) on 21 November 2015.
  13. ↑ "Sheffield to Rotherham tram-train scheme delayed by year". BBC News. British Broadcasting Corporation. 8 October 2015.
  14. 1 2 "Sheffield to Rotherham tram-train pilot delayed further". BBC News. British Broadcasting Corporation. 18 May 2016.
  15. ↑ "Sheffield to Rotherham tram-train scheme delayed further". BBC News. British Broadcasting Corporation. 25 November 2016.
  16. 1 2 "Scathing report on Sheffield-Rotherham tram-train pilot". BBC News. British Broadcasting Corporation. 15 December 2017.
  17. 1 2 O'Connor, P. (15 August 2013). "Next stop Rotherham: Sheffield's new Tram Trains". Rail Engineer. Coalville: Rail Media. Archived from the original on 24 September 2015.
  18. ↑ Hargreaves, J. (13 February 2014). "Sheffield to Rotherham tram-train plans". We Love Sheffield. Social Sheffield. Archived from the original on 21 October 2017.
  19. 1 2 "Minister launches first Citylink tram train into service". Perth: Stagecoach Group. 14 September 2017.
  20. ↑ "Sheffield tram-train enters service". Metro Report International. Sutton: DVV Media International. 15 September 2017. Archived from the original on 21 December 2017.
  21. ↑ "Sheffield to Rotherham tram-train delayed". Rail Technology Magazine. Manchester: Cognitive Publishing. 14 November 2014. Archived from the original on 24 September 2015.
  22. ↑ Pritchard, R. (February 2016). "First new South Yorkshire tram-train delivered". Today's Railways. No. 170. Sheffield: Platform 5 Publishing. pp. 28–29.
  23. ↑ Cooper, S. (10 May 2018). "Testing finally begins on Sheffield to Rotherham tram-train link". The Star. Johnston Publishing. Archived from the original on 14 June 2018.
  24. ↑ "Rotherham tram-train to launch this month". Metro Report International. Sutton: DVV Media International. 4 October 2018. Archived from the original on 5 October 2018.
  25. ↑ "Sheffield-Rotherham tram-train derails after being hit by lorry". BBC News. British Broadcasting Corporation. 25 October 2018. Retrieved 5 May 2019.
  26. ↑ Peace, L. (30 November 2018). "Sheffield tram crash: One person injured as picture of mangled car wreck emerges". The Star. JPIMedia. Archived from the original on 1 December 2018.
  27. ↑ "Tram-trains suspended after fault found". BBC News. British Broadcasting Corporation. 10 April 2019. Retrieved 14 April 2019.
  28. ↑ Cooper, S. (10 April 2019). "Fault found on Sheffield to Rotherham tram-train service". The Star. JPIMedia. Archived from the original on 5 May 2019.
  29. ↑ Prior, G. (31 May 2019). "Reduced Tram-Train service". British Trams Online. Retrieved 7 June 2019.
  30. ↑ "Temporary Changes to Tram Train services". Stagecoach UK Bus. 29 May 2019. Archived from the original on 7 June 2019.
  31. ↑ "Tram-trains suspended 'on maker's advice'". BBC News. British Broadcasting Corporation. 14 December 2019. Retrieved 14 December 2019.
  32. ↑ "Sheffield-Rotherham tram-train withdrawn over hydraulic fault". BBC News. British Broadcasting Corporation. 16 December 2019. Retrieved 20 December 2019.
  33. ↑ "Supertram Citylink tram-train returns". British Trams Online. Retrieved 15 December 2019.
  34. ↑ "In Pictures: 399 206 returns to service as a tram". British Trams Online. 9 September 2020. Retrieved 13 September 2020.
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