British Rail Class 334
Coradia Juniper
InteriorimageFile:ScotRail Class 334 interior, 08 May 2013.JPG
InteriorcaptionRefurbished First ScotRail interior in 2013
StocktypeElectric multiple unit
Service3 April 2001 – present
ManufacturerAlstom
Factory
FamilyCoradia Juniper
ReplacedClass 303
Yearconstruction1999–2002
Refurbishment
  • 2012–2014
  • 2015–2017
Numberbuilt40[1]
SuccessorClass 380[2]
Formation3 cars per unit:
Fleetnumbers334001–334040
Capacity183 seats[1]
OwnerEversholt Rail Group[1]
OperatorScotRail
CarbodySteel
Trainlength61.96 m (203 ft 3 in)[3]
Carlength
  • DMS vehs.: 21.01 m (68 ft 11 in)[1]
  • PTS vehs.: 19.94 m (65 ft 5 in)[1]
Width2.80 m (9 ft 2 in)
Height3.77 m (12 ft 4 in)
DoorsDouble-leaf sliding plug
Maxspeed90 mph (145 km/h)[1]
TractionAlstom ONIX 800 IGBT
Traction motors4 × 270 kW (362 hp)
(2 per DMS car)
Poweroutput1,080 kW (1,448 hp)
Acceleration0.62 m/s2 (2.0 ft/s2) max.[1]
Electricsystemoverhead
CollectionmethodPantograph
Uicclass2′Bo′+2′2′+Bo′2′
BrakesElectro-pneumatic (disc),
Safety
Coupling
MultipleworkingWithin class

The British Rail Class 334 Coradia Juniper is a suburban electric multiple unit passenger train built by Alstom in Birmingham. They are part of Alstom's Coradia Juniper family of trains, along with Classes 458 and 460.

The trains are operated by ScotRail and mainly run on the North Clyde Line on - Edinburgh, - and - services. However, they can also sometimes be seen on the Argyle Line on /Milngavie to /// services. They were ordered by SPT/ScotRail (when part of National Express) for outer-suburban services in Glasgow.

History

Their introduction saw the withdrawal of the last of Glasgow's venerable Class 303 "Blue Train" sets which had been in service since 1960.[3] Although deliveries started to Strathclyde in 1999, the Class 334 did not enter passenger service until 2001 due to numerous teething problems (in common with other Coradia Juniper-based classes) and technical failures which plagued the new units upon their introduction.[2]

All units are owned by Eversholt Rail Group.[2] ScotRail leased a total of 40 units which can be seen in use daily across the SPT electric network. On the maiden run of the units, 334010 and 334020 ran to Gourock. The units initially ran on the Ayrshire and Inverclyde lines, but became a common sight on the Argyle and North Clyde lines.

From its introduction, the Class 334 operated on the Ayrshire Coast Line, Inverclyde Line, North Clyde Line and Argyle Line, but by June 2011 the class had been largely replaced on the Ayrshire and Inverclyde lines by the Class 380, with only occasional units seen on those routes.

Relivery and refurbishment

In September 2008, the Scottish Government's agency Transport Scotland announced that all ScotRail trains (including those from the Strathclyde Partnership for Transport) would be eventually repainted in a new, blue livery with white Saltire markings on the carriage ends. Class 334 re-livery began in November 2010 in preparation for the Airdrie to Bathgate reopening.[5]

On 24 August 2011, ScotRail announced plans to refurbish all the fleet, with the project expected to start in November 2011 and take two years to complete.[6][7] 334020 was the first unit to be refurbished at Kilmarnock's Brodie Rail Works from 3 February 2012 to 2 May 2012. The last unit to be refurbished was 334006, which left Brodie Works on 8 November 2014.[citation needed]

From early 2015, Eversholt commissioned Alstom to perform an extensive £36.1m overhaul of the entire fleet to improve passenger conditions, which included the retrofitting of full air conditioning, at-seat charging points, provision for wi-fi, passenger counting equipment, cycle spaces, LED lighting and CCTV in the saloons, and an upgraded CCTV system for driver-only operation.[8][9][10] Improvements were also made to the reliability of the passenger doors, and the original Tightlock couplings were replaced with Scharfenberg-type automatic couplers manufactured by Voith, allowing Class 334 units to rescue and be rescued by units. The overhaul process was completed in 2017.

On 22 June 2021 during Pride Month in the United Kingdom, a Class 334 was unveiled with progress flag colours. ScotRail stated that the livery would remain in place until 2029, after which the metalwork underneath would require repainting.[11]

In 2023 Alstom was awarded a contract by Eversholt Rail to overhaul the Class 334 fleet. The work, with a contract value of £12 million, will be carried out at Polmadie Depot and is planned to start in January 2024.[12][13]

Accidents

  • On 16 January 2008, 334017 was involved in a minor collision whilst entering Glasgow Central station. The unit was working the 08:24 Gourock to Glasgow Central service when it collided with an empty, stationary Class 318. The train was travelling at less than 4 mph (6 km/h) when the collision occurred. Four passengers were slightly injured; however only one required hospital attention, and was transferred to Glasgow Southern General hospital in a taxi. The unit was undamaged.[14]
  • On 15 October 2015, 334016 was involved in a collision on the approach to Uphall railway station. The unit was working the 16:39 Edinburgh to Milngavie service when it collided with an empty Toyota Hilux pick-up truck which had been stolen and abandoned on the tracks. The train was travelling at approximately 75 mph (121 km/h) when the collision occurred. The unit did not derail, but one passenger suffered minor injuries to their hand from broken glass.[15]

Fleet details

ClassOperatorQty.Year builtCars per unitUnit nos.
334ScotRail401999–20023334001–334040

Notes

  1. ^ bodyshells only[16]
  2. ^ Assembly[16]

References

  1. ^ "Class 334". London: Eversholt Rail Group. Archived 21 April 2019 at the Wayback Machine. Retrieved 21 April 2019.
  2. ^ "Alstom 'Juniper' Platform". Modern Locomotives Illustrated. No. 223. February 2016. pp. 49–59.
  3. ^ "A grand plan for Scotland’s railways | Rail Express". 2023-02-17. Archived 2024-02-28 at the Wayback Machine. Retrieved 2025-12-12.
  4. ^ System Data for Mechanical and Electrical Coupling of Rail Vehicles in support of GM/RT2190. London: Rail Safety and Standards Board. 22 June 2011. p. 4. SD001. Archived from the original on 1 April 2012. Retrieved 22 November 2022.
  5. ^ "ScotRail 25th Anniversary Publicity Materials". Transport Scotland. Archived from the original on 9 October 2008.
  6. ^ "ScotRail in £4 million fleet refurbishment - creating 20 jobs in Ayrshire". ScotRail. Archived from the original on 18 April 2012. Retrieved 22 October 2011.
  7. ^ "Scotrail to refurbish Class 334 EMUs". Railway Herald. ' (281): 4. 29 August 2011. Archived 29 December 2023 at the Wayback Machine. Retrieved 1 September 2011.
  8. ^ "Eversholt Rail awards Alstom with contract to overhaul Scottish suburban trains". Alstom. 1 September 2014. Archived 10 January 2022 at the Wayback Machine. Retrieved 10 January 2022.
  9. ^ "ScotRail Class 334 trains get £36m refurbishment and power points fitted after 13 years of service". Rail.co.uk. 16 November 2015. Archived from the original on 19 September 2021. Retrieved 19 September 2021.
  10. ^ "'334' Overhaull Progress". Modern Railways. 22 December 2016. Archived 10 January 2022 at the Wayback Machine. Retrieved 10 January 2022.
  11. ^ Gibson, Darren (2021-06-22). "ScotRail unveils Pride train confirming it will run on Clydebank line". Clydebank Post. Archived 22 June 2021 at the Wayback Machine. Retrieved 2021-06-22.
  12. ^ "Alstom to overhaul '334s'". Modern Railways. No. 893. Stamford: Key Publishing. February 2023. p. 90.
  13. ^ "Alstom awarded £12 million overhaul contract for ScotRail trains". Alstom Transport UK. 9 January 2023. Archived 26 January 2023 at the Wayback Machine. Retrieved 26 January 2023.
  14. ^ "Passengers hurt as trains collide". BBC News. 16 January 2008. Archived 29 November 2020 at the Wayback Machine. Retrieved 18 April 2011.
  15. ^ "Train hits vehicle near Uphall in West Lothian". BBC News. 14 October 2015. Archived 11 November 2018 at the Wayback Machine. Retrieved 21 June 2018.
  16. ^ "Class 334". Modern Locomotives Illustrated. No. 225. June 2017. pp. 44–45.