Belfast–Dublin line explained

Dublin-Belfast Main Line
Color:660460
Logo Alt:Translink NI Railways logo
Logo2:Irish Rail Logo.svg
Logo Width2:150
Logo Alt2:Irish Rail logo
Other Name:The Great Northern Main Line
Dublin Line
Belfast Line
Native Name:Stáisiún Uí Chonghaile - Béal Feirste[1]
Native Name Lang:ga
Type:Commuter rail
Regional rail
Heavy rail
Freight rail
System:Iarnród Éireann
NI Railways
Status:Operational
Locale:Ireland
Start:Belfast Grand Central
Connectinglines:Belfast-Bangor line
Belfast-Larne line
Belfast-Derry~Londonderry line
Dublin-Rosslare line
Dublin Sligo line
Dublin-Cork line
Luas
Formerconnections:Lisburn–Antrim line
Stations:34
Routes:Dublin Connolly – Belfast Grand Central
Dublin Connolly – Drogheda Macbride
Dublin Connolly – Dundalk Clarke
Belfast Grand Central – Lisburn
Belfast Grand Central – Portadown
Belfast Grand Central – Newry
Portadown – Newry (morning only)
DART Malahide/Howth – Bray (– Greystones)
Open:1876
Operator:Iarnród Éireann
NI Railways
Depot:Adelaide (Translink)
Drogheda (Iarnród Éireann)
Stock:071 Class
201 Class
8100 Class
8500 Class
8510 Class
8520 Class
3000 Class "C3K"
4000 Class "C4K"
22000 Class "ICR"
29000 Class "CxK"
De Dietrich Stock
Tracks:Double track
Gauge: Irish gauge
Electrification:1,500 V DC overhead line (south of Malahide)
Speed Mph:90

The Dublin-Belfast Line or The Great Northern Main Line (Dublin line by NI Railways and Belfast line by Irish Rail) is a 112-mile (181 km) semi-electrified railway connecting Belfast Grand Central in Northern Ireland to Dublin Connolly in the Republic of Ireland. The key towns and cities of Skerries, Drogheda, Dundalk, Newry, Portadown, Lurgan, and Lisburn are situated along the line. The Dublin-Belfast Line is the busiest railway route on the island of Ireland, carrying a mixture of intercity rail, regional rail, commuter rail traffic and freight traffic. It is uniquely significant as the only railway line that crosses the Republic of Ireland–United Kingdom border.

The line was not originally conceived as a single route, but was built as a patchwork of local lines which were linked together by various railway companies. The Ulster Railway opened the first section in 1839, Dublin and Drogheda Railway opened its segment in 1844,and the Dublin and Belfast Junction Railway completed the link between Drogheda and Portadown in 1852. These companies amalgamated into the Great Northern Railway (Ireland) (GNRI) in 1876.

History

Early Development

The construction of the Dublin–Belfast line was undertaken by three separate railway companies:

Amalgamation and Formation of the Great Northern Railway (Ireland)

In 1875, the Dublin and Drogheda Railway and the Dublin and Belfast Junction Railway merged to form the Northern Railway of Ireland. A year later, this entity combined with the Ulster Railway and the Irish North Western Railway, resulting in the creation of the Great Northern Railway (Ireland) (GNRI) in 1876. This consolidation streamlined operations and management across the network.[5]

The partition of Ireland in 1922 meant that the Irish border passed between Goraghwood and Dundalk, causing delays as trains were required to stop at stations on either side of the border for customs examinations. This disruption was eased in 1947 with the opening of facilities for customs checks at Amiens Street station in Dublin and Great Victoria Street station in Belfast though this only helped its recently introduced enterprise Express.[6]

At the same time, the GNRI made its Belfast–Dublin services non-stop with the launch of the Enterprise Express. The GNRI was nationalised by the governments of the Republic of Ireland and Northern Ireland in 1953 as the Great Northern Railway Board, but in 1958 this was split between the Ulster Transport Authority and Córas Iompair Éireann. This led to a running down of rail services in Northern Ireland, leaving only some Belfast commuter lines, the northern route to Derry and the link to Dublin. In 1970 the newly formed NI Railways bought new locomotives and rolling stock for the Belfast–Dublin Enterprise service as well as new diesel multiple units for local services.[7] [8] [9]

Services

Enterprise (Belfast Line/Dublin Line)

See main article: Enterprise (train service).

The Enterprise service is a premier cross-border rail link jointly operated by Iarnród Éireann and NI Railways, connecting Dublin Connolly station in the Republic of Ireland with Belfast Grand Central station in Northern Ireland. As of October 29, 2024, the service operates hourly in each direction from early morning, totalling 15 trains daily from Monday to Saturday, and eight services on Sundays.

The journey covers the full line and takes about two hours, with key stops including Drogheda MacBride, Dundalk Clarke, Newry, and Portadown (Lurgan and Lisburn on Sundays). Onboard amenities feature free Wi-Fi, a dining car, and both standard and Enterprise Plus accommodations, the latter offering more spacious seating and complimentary refreshments.[10]

Newry Line

The Belfast–Newry line (known as the Portadown line by NI Railways) operates from Belfast Grand Central in County Antrim to Newry in County Down, Northern Ireland. The manager for this line is based at Portadown railway station, although the line extends to the border to include the Scarva and Poyntzpass halts and Newry. Newry is on the fringe of the network, being the last stop before the border with the Republic of Ireland. The line follows the route of the northern half of the main Dublin–Belfast line.[11]

NI Railways operates a local service between Belfast Grand Central operating to and from Portadown. Local services are operated with C3K/C4K trains, constructed by CAF, Spain. A less intensive local service operates from Newry, with only four local services a day operating from there.[12] [13]

Northern Line

The Northern Commuter line, operated by Iarnród Éireann, connects Dublin Connolly in County Dublin to Dundalk Clarke in County Louth. Key stations along the route include Malahide, Donabate, and Drogheda MacBride, with the line's management based at Dublin Connolly railway station. Dundalk Clarke is the final stop before reaching the border with Northern Ireland. The line follows the southern half of the Dublin-Belfast Main line.[14]

While most commuter services run between Dublin and Drogheda MacBride, only three morning and one afternoon service originate from Dundalk Clarke. In the reverse direction, one late-morning service travels to Dundalk Clarke, along with five evening to late-night services operating on weekdays. Theses are operated by 29000 class or the 22000 class.[15] [16]

Howth Branch

The Howth Branch line, operated by Iarnród Éireann, extends from Howth Junction & Donaghmede station to Howth station in Fingal, Ireland. This branch serves the coastal village of Howth and is served by Dublin Area Rapid Transit (DART) trains.[17] [18]

DART services on the Howth Branch operate with high frequency, typically every 10 minutes during peak times on weekdays, providing access between Howth and Dublin city centre.[25] [26] [27]

Navan Branch

See main article: Dublin–Navan railway line.

The Navan Branch, managed by Iarnród Éireann, is a railway line in County Meath, Ireland, primarily used for freight services. This line facilitates the transportation of materials from the Tara Mines, one of Europe's largest zinc and lead mines, located near Navan. Freight trains operate regularly between the mines and Dublin Port.[28] [29]

Infrastructure

Track Layout

From Dublin Connolly station to Drogheda, the line is double-track with a singler passing loop at Clongriffin. This section is the busiest, handling intercity trains to Belfast, commuter services (DART and Northern Commuter), and freight traffic to Navan. The double-track configuration, combined with frequent stops for commuter trains, can lead to delays for faster intercity services. North of Drogheda, the line remains double-track with no freight traffic continuing beyond the Navan branch. Drogheda station features a third bay platform used primarily for terminating commuter services from Dublin[30] [31] [32] [33] [34]

At Milepost 59 ½, just north of Dundalk, the ownership and control of the line shift to NI Railways (part of the Translink network), which takes over the operation of the line as it continues north towards Belfast. This boundary marks a significant transition in control with signalling changing from Connolly Signal central to Portadown which controls the line from the Border to Lisburn. The line between Dundalk and Newry is also a double-track configuration, with Dundalk station featuring a third bay platform for terminating services from Dublin, and Newry station having two platforms with no additional tracks.[35]

From Newry to Belfast, the line continues as double-track, with stations like Portadown playing a significant role in the network. Portadown station includes three tracks, facilitating overtaking or terminating services, while Lisburn station primarily serves suburban commuter trains heading into Belfast. As the line leaves Lisburn, signalling changes for a final time to Belfast Lanyon Place Signal Centre, which controls signalling north of Lisburn on the approach to Belfast. Approaching City junction, the infrastructure expands to accommodate the higher density of commuter and intercity services converging on Belfast Grand Central.[36] [37] [38]

Electrification

The line is only partially electrified:

Rolling stock

Rolling stock in operation

The Dublin-Belfast train route is serviced by a variety of trains,

The C3K and C4K trains operate from Portadown, Lisburn, and Newry to Belfast Grand Central. Built by CAF, the C3K trains are known for their reliability and comfort, featuring modern amenities for a pleasant journey. However, only certain C3Ks have the necessary signalling equipment to operate cross-border. The newer C4K trains offer increased capacity, ensuring efficient travel within Northern Ireland, but cannot operate across the border. These trains come in sets of 3 or 6 cars.[41]

Additionally, the 29000 Class railcars are used for commuter services from Dundalk and Drogheda to Dublin, providing a journey with seating and power outlets. Only certain 29000 and 22000 Class railcars are equipped with the required signalling systems to operate on both sides of the border, with the 22000 Class railcars designed primarily for intercity journeys but occasionally serving on commuter services as well.

The DART (Dublin Area Rapid Transit) network utilizes electric multiple units (EMUs), including the 8100 Class, as well as the 8500, 8510, and 8520 Classes.[42]

The Enterprise service, primarily using Mark 3 carriages built by CAF, offers a comfortable and efficient travel experience with modern amenities such as air-conditioning, onboard Wi-Fi, and ergonomic seating. The Enterprise trains are locomotive-hauled, though are prone to be. Notably, the C3K and 22000 Class trains also supplement the Enterprise service at certain times, enhancing the overall capacity and flexibility of the Dublin-Belfast corridor.[43]

FamilyClassImageTypeTop speedOperatorRoutesIntroduced
mphkm/h
Alstom Commuter8100 ClassEMU10060Iarnród ÉireannHowth-Bray Daly
Howth-Greystones
Malahide-Bray Daly
Malahide-Greystones
1983–1984
8500 Class110702000
8510 Class2001
8520 Class2003–2004
Cxk3000 ClassDMU90145NI Railways
  • Dublin-Belfast (Enterprise)
  • Belfast-Lisburn
  • Belfast-Portadown
  • Belfast-Newry
  • Portadown-Newry
2003–2005
4000 Class
  • Belfast-Lisburn
  • Belfast-Portadown
  • Belfast-Newry
  • Portadown-Newry
20102021
ICR22000 Class100160Iarnród Éireann
  • Dublin–Dundalk
  • Dublin–Belfast (Enterprise)
2007–2012
Cxk29000 Class75120
  • Dublin–Drogheda
  • Dublin–Dundalk
2002–2005
201 ClassDiesel locomotive102164Iarnród Éireann & NI RailwaysDublin–Belfast (Enterprise)1994–1995
De Dietrich stockPassenger coaches901451996
Mark 3Generator van1001601980
111 ClassDiesel locomotive90145NI RailwaysInfrastructure duties19801984
MPVDiesel multiple unit62100NI RailwaysSandite duties2016
Only 6 Class 3000 units are equipped with CAWS, which allows them to operate in the Republic of Ireland.

Accidents

Developments

Previous Developments

New Enterprise Trains (1997)

In 1997, a set of new De Dietrich Stock coaches were purchased jointly by Northern Ireland Railways and Iarnród Éireann to operate a revamped Enterprise service along with the new Class 201 locomotives.[49]

National Development Plan (2000)

In 2000, the government of the Republic of Ireland developed a National Development Plan, which has seen major investment in infrastructure. Almost the entire railway network, including the Belfast–Dublin line as far as the border, has been upgraded to continuous welded rail, while signalling is controlled using the Centralised Traffic Control system located at Dublin Connolly station.[50]

Translink Developments (2006)

Translink announced in March 2006 that planning permission was sought from Newry and Mourne District Council to construct a new railway station to the east of the existing station at Newry. Platform improvement and extension is proposed, as are replacement canopies, a track maintenance building and a new 'Park and Ride' facility. Alongside this, a major upgrade is currently taking place to refurbish all the stations on this line with the exception of Bangor, Lanyon Place and Great Victoria Street. This project is estimated to cost £7 million.

Hourly Enterprise Service (2024)

On Tuesday, 29th October 2024, the new hourly Enterprise train service launched, connecting Belfast Grand Central Station and Dublin's Connolly Station. This development was made possible by €25 million in funding from the Irish government's Shared Island Fund and the Department of Transport. The opening of Belfast Grand Central Station also contributed to this significant expansion. Now, the service operates fifteen times in each direction from Monday to Saturday and eight times each way on Sundays.[51] [52] [53]

Current developments

DART+ Coastal North (2021)

The DART North project includes several key upgrades to enhance rail connectivity and service quality. To start, the electrified rail network will extend from Malahide to Drogheda, covering approximately 37 kilometres. This involves installing overhead electrification equipment (OHLE) similar to the current DART network. Additionally, new train stabling facilities and other necessary rail infrastructure improvements at key locations such as Drogheda MacBride, Malahide, Clongriffin, and Howth Junction & Donaghmede Stations will increase the number of trains running and improve service frequency. Accessibility at Howth Junction & Donaghmede Station will receive significant enhancements to improve the overall customer experience. Upgraded signalling systems and telecommunications along the route will ensure safe and efficient train operations. By transitioning from diesel to electric trains, the project aims to reduce the carbon footprint and support sustainable development in line with government policies.[54] [55]

New Enterprise Trains (2027)

In 2027, the Enterprise train service between Belfast and Dublin will introduce new trains, replacing the existing fleet. Funded by €165 million from the PEACEPLUS Programme, the new trains will reduce journey times to under two hours, improve accessibility, and enhance passenger experience. The eight new trains will be designed for sustainability, supporting net zero carbon emissions goals.[56] [57] [58]

Proposed developments

High-speed rail proposal (2020)

In 2020 the Irish Government confirmed it will be launching a study into an approximately 500km (300miles) high-speed railway from Belfast via Dublin to Cork and Limerick,[59] which could cost around €15 billion.[60]

All Ireland Rail review (2024)

The All-Island Strategic Rail Review proposes several significant developments to enhance rail connectivity across Ireland. Portadown is set to become a major interchange, with plans to restore the railway line from Derry~Londonderry to Portadown, thereby improving connectivity in the northwest region. A new intercity station is proposed for Craigavon, aiming to serve as a key hub in the region and support regional development. A new spur line from Newry is proposed via Banbridge to Belfast Grand Central. In the Dublin area, the review suggests constructing a spur from Clongriffin to Dublin Airport, providing direct rail access to Ireland's busiest airport. Additionally, there are plans to quadruple track from Clongriffin to Howth Junction to increase capacity and service frequency. These initiatives are part of a broader €37/£32 billion plan to transform the islands rail network by 2050, focusing on electrification, speed enhancements, and expanded services to promote sustainable travel and regional development.[61] [62]

Popular culture

The Dublin–Belfast railway line has been featured in various cultural works, reflecting its significance in connecting two major cities on the island of Ireland. In literature, the line is depicted in novels such as "The Journey Home" [63] by Dermot Bolger, where it symbolizes the protagonist's return to Dublin. The route has also been released as a commercial add on for Microsoft Train Simulator by Making Tracks. It was released in two sections, part one covering Belfast Central (Now Lanyon Place) to Dundalk Clarke,[64] with part two covering the section from Dundalk Clarke to Dublin Tara street. It is set during the 2000s.[65]

Sources

External links

Notes and References

  1. Web site: Archived copy . 13 January 2025 . 13 January 2025 . https://web.archive.org/web/20250113211758/https://www.irishrail.ie/ga-ie/train-timetables/timetables-by-route . live .
  2. Web site: Ulster Railway - Graces Guide . 2025-01-31 . www.gracesguide.co.uk . 30 March 2024 . https://web.archive.org/web/20240330135950/https://www.gracesguide.co.uk/Ulster_Railway . live .
  3. Hajducki, 1974, map 8
  4. Web site: Steaming into the Future . www.askaboutireland.ie . 31 January 2025 . 24 February 2024 . https://web.archive.org/web/20240224234101/https://www.askaboutireland.ie/reading-room/environment-geography/transport/0-Transport/steaming-into-the-future/ . live .
  5. Friel . Charles P . Railways in Craigavon . dead . Journal of the Craigavon Historical Society . 2 . 2 . https://web.archive.org/web/20091027094054/http://geocities.com/craigavonhs/rev/frielrailwayscraig.html . 2009-10-27 . 2009-09-01.
  6. Web site: Democrat . Dundalk . 2017-08-01 . The legendary history of the Great Northern Railway in Dundalk . 2025-01-31 . www.dundalkdemocrat.ie . en . 31 August 2024 . https://web.archive.org/web/20240831081051/https://www.dundalkdemocrat.ie/news/home/262875/the-legendary-history-of-the-great-northern-railway-in-dundalk.html . live .
  7. Web site: Cross Border Archives Project - Online Exhibitions - Great Northern Railway . 2025-01-31 . www.louthnewryarchives.ie . 11 December 2024 . https://web.archive.org/web/20241211001716/https://www.louthnewryarchives.ie/online-exhibitions/great-northern-railway/index.shtml . live .
  8. Web site: The Enterprise at 75 (1940s - 1960s) . 2025-01-31 . www.translink.co.uk.
  9. Web site: 2025-01-31 . Irish Railway Factsheet: Great Northern Railway (Ireland) . irrs.ie . 31 January 2025 . 13 May 2024 . https://web.archive.org/web/20240513053224/https://irrs.ie/wp-content/uploads/2018/06/IRRS_Factsheets_GNRI.pdf . live .
  10. Web site: Rail . Irish . Iarnród Éireann InterCity Fleet Information . 2025-01-31 . Irish Rail . en . 14 January 2025 . https://web.archive.org/web/20250114111013/https://www.irishrail.ie/en-ie/about-us/iarnrod-eireann-fleet/intercity-fleet . live .
  11. Web site: 2015-10-30 . Rail services nidirect . 2025-01-31 . www.nidirect.gov.uk . en . 5 August 2024 . https://web.archive.org/web/20240805185558/https://www.nidirect.gov.uk/articles/rail-services . live .
  12. Web site: 2025-01-31 . Portadown Line Translink NIRailways / Portadown Line From Wednesday 01 January 2025 - To Sunday 07 December 2025 . translink.co.uk.
  13. Web site: Translink signs £50M contract with CAF for supply of 21 new train carriages - Translink . live . https://web.archive.org/web/20210924143920/https://www.translink.co.uk/corporate/media/pressnews . 24 September 2021 . 16 December 2018 . www.translink.co.uk.
  14. Web site: Rail . Irish . DART and Commuter Services . 2025-01-31 . Irish Rail . en . 12 January 2025 . https://web.archive.org/web/20250112115934/https://www.irishrail.ie/en-ie/about-us/iarnrod-eireann-services/dart-commuter#:~:text=Dublin%20Northern%20Commuter%C2%A0service%20extends%20from%20Dublin's%20Pearse%20Station%20via%20Dublin%20Connolly%20Station%20to%20Dundalk. . live .
  15. Web site: Rail . Irish . Iarnród Éireann Commuter Fleet Information . 2025-01-31 . Irish Rail . en . 14 January 2025 . https://web.archive.org/web/20250114184125/https://www.irishrail.ie/en-ie/about-us/iarnrod-eireann-fleet/commuter-fleet . live .
  16. Web site: DART/Commuter Timetable . 2024-12-21 . irishrail.ie.
  17. Web site: Technical Optioneering Report: Howth Branch Level Crossings . 2025-01-31 . irishrail.ie.
  18. Web site: ‘Absolute disaster’: Irish Rail’s proposal for feeder service on Howth Dart line sparks local anger . subscription . 2025-01-31 . The Irish Times . en . 2 October 2024 . https://web.archive.org/web/20241002140607/https://www.irishtimes.com/ireland/dublin/2024/09/03/absolute-disaster-irish-rails-proposal-for-feeder-service-on-howth-dart-line-sparks-local-anger/ . live .
  19. Web site: Howth Junction . 2025-01-31 . eiretrains.com . en . 27 November 2024 . https://web.archive.org/web/20241127100425/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20H/Howth%20Junction/IrishRailwayStations.html . live .
  20. Web site: Rail . Irish . Howth Junction and Donaghmede . 2025-01-31 . Irish Rail . en . 27 November 2024 . https://web.archive.org/web/20241127151506/https://www.irishrail.ie/en-ie/station/howth-junction-and-donaghmede . live .
  21. Web site: Rail . Irish . Bayside, Sutton Dublin 13 . 2025-01-31 . Irish Rail . en . 26 January 2025 . https://web.archive.org/web/20250126203901/https://www.irishrail.ie/en-ie/station/bayside . live .
  22. Web site: O'Leary . Kim . 2022-02-21 . Train delays for passengers as gardai summoned to Bayside station . 2025-01-31 . Dublin Live . en.
  23. Web site: Sutton . 2025-01-31 . eiretrains.com . en . 27 April 2021 . https://web.archive.org/web/20210427163328/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20S/Sutton/IrishRailwayStations.html . live .
  24. Web site: Howth . 2025-01-31 . eiretrains.com . en . 30 September 2019 . https://web.archive.org/web/20190930002225/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20H/Howth/IrishRailwayStations.html . live .
  25. Web site: 2024-05-13 . Amchlár DART/DART Timetable . live . https://web.archive.org/web/20240705232253/https://www.irishrail.ie/IrishRail/media/Timetable-PDF-s/Connolly-DART-timetables/4-_18-_dart_commuter.pdf . 2024-07-05 . PDF . 2024-07-05 . Irish Rail.
  26. Web site: Howth Branch (Dublin and Drogheda Railway) . RAILSCOT . 2025-01-13 . en . 13 January 2025 . https://web.archive.org/web/20250113213730/https://www.railscot.co.uk/companies/H/Howth_Branch_Dublin_and_Drogheda_Railway/ . live .
  27. Web site: Howth Junction . 2025-01-13 . EireTrains . en . 27 November 2024 . https://web.archive.org/web/20241127100425/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20H/Howth%20Junction/IrishRailwayStations.html . live .
  28. Web site: 2008 . Navan station . EireTrains . 13 January 2025 . 20 January 2025 . https://web.archive.org/web/20250120163401/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20N/Navan/IrishRailwayStations.html . live .
  29. Web site: 2008 . Navan Junction station . EireTrains . 13 January 2025 . 20 January 2025 . https://web.archive.org/web/20250120163438/http://eiretrains.com/Photo_Gallery/Railway%20Stations%20N/Navan%20Junction/IrishRailwayStations.html . live .
  30. Web site: 2024-03-25 . Dublin Airport Rail Connectivity . 2025-01-31 . Irish Railway Modeller . en-IE . 17 April 2024 . https://web.archive.org/web/20240417220127/https://irishrailwaymodeller.com/topic/15876-dublin-airport-rail-connectivity/ . live .
  31. Web site: 2025-01-31 . 8 Reinstatement & Closure of Rail Lines . irishrail.ie.
  32. Web site: Rail line from Clongriffin to Dublin Airport would be quick and cheap, committee hears . 2025-01-31 . The Irish Times . en.
  33. Web site: Chapter 4 Description of the Proposed Development (Dart +) . live . 31 January 2025 . 9 August 2024 . https://web.archive.org/web/20240809174806/https://www.dartplus.ie/S3mvc/media/DART-Coastal-North-Railway-Order/04.2%20EIAR%20Vol%202%20Chapters/EIAR-Vol-2-Chapter-4-Description-of-the-Proposed-Development-D-WP56-ARP-P3-NL-RP-EVUU-000005-P06.pdf .
  34. Web site: 2012-11-30 . Questions from a passenger!! . 2025-01-31 . boards.ie - Now Ye're Talkin' . en.
  35. Web site: 2014-04-28 . INVESTIGATION REPORT Operating irregularity during Single Line Working between Dundalk and Newry 23rd March 2013 RAIU Report No: R2014 – 002 . 2025-01-31 . raiu.ie . 20 July 2024 . https://web.archive.org/web/20240720031925/https://www.raiu.ie/assets/files/pdf/raiur002_operating_irregularity_during_slw_between_dundalk_and_newry_23_march_2013.pdf . live .
  36. Web site: 2023-04-14 . Double-tracked lines . 2025-01-31 . Irish Railway Modeller . en-IE . 21 April 2023 . https://web.archive.org/web/20230421122444/https://irishrailwaymodeller.com/topic/13544-double-tracked-lines/ . live .
  37. Web site: Collision at Knockmore Junction, Northern Ireland 4 February 2016 . gov.uk . 31 January 2025 . 30 April 2024 . https://web.archive.org/web/20240430045726/https://assets.publishing.service.gov.uk/media/57ff4761e5274a495f000014/R202016_161017_Knockmore.pdf . live .
  38. Web site: Train ran onto a washed-out embankment near Knockmore, Northern Ireland 28 June 2012 . 2025-01-31 . gov.uk.
  39. News: 2023-12-07 . Transport: Funding for study on electrification of Belfast-border rail line . 2025-01-13 . BBC News . en-GB.
  40. News: Nolan . Liam . 2024-04-29 . Electrified DART+ plan moves a step closer . RTÉ . en.
  41. Web site: Northern Ireland Railways Revitalisation . 2025-01-31 . Railway Technology . en-US.
  42. Web site: Rail . Irish . Iarnród Éireann DART Fleet Information . 2025-01-31 . Irish Rail . en.
  43. Web site: Translink . Travel Updates . https://web.archive.org/web/20250123160308/https://www.translink.co.uk/service-incidents . 23 January 2025 . 2025-01-31 . www.translink.co.uk . en . live .
  44. Web site: Advoyle Train Ambush - 24 Jun 1921 . 2025-01-13 . www.cairogang.com . 13 January 2025 . https://web.archive.org/web/20250113213729/https://www.cairogang.com/soldiers-killed/adavoyle/adavoyle.html . live .
  45. Web site: Sugar Crash at Rush and Lusk . 2025-01-13 . irishrailwayarchitecture.blogspot.com . en-GB . 13 January 2025 . https://web.archive.org/web/20250113213731/http://irishrailwayarchitecture.blogspot.com/2019/09/sugar-crash-at-rush-and-lusk.html . live .
  46. News: Belfast Dublin Train Derailed . RTÉ . 2025-01-13 . en . 13 January 2025 . https://web.archive.org/web/20250113213728/https://www.rte.ie/archives/2018/0106/930851-belfast-dublin-train-derailed/ . live .
  47. Web site: Investigation Report No. 2010 – R004 August 2010 . 13 January 2025 . 13 January 2025 . https://web.archive.org/web/20250113213729/https://www.raiu.ie/assets/files/pdf/accident_malahide.pdf . live .
  48. News: Malahide Viaduct Collapse . 2025-01-13 . RTÉ . en.
  49. Web site: Intercity Fleet information . https://web.archive.org/web/20121005165133/http://www.irishrail.ie/index.jsp?p=123&n=209 . 5 October 2012 . 7 August 2012 . Irish Rail.
  50. Book: Ireland: national development plan 2000-2006 . registration . 1999 . Dublin . Stationery Office . 978-0-7076-6285-5.
  51. News: 2024-10-29 . Enterprise: Hourly rail service between Belfast and Dublin begins . 2025-01-13 . BBC News . en-GB.
  52. Web site: ENTERPRISE TRAIN SERVICE TO DUBLIN . 2025-01-13 . www.translink.co.uk . 10 January 2025 . https://web.archive.org/web/20250110103959/https://www.translink.co.uk/usingourservicesandproducts/ourservices/enterprise#:~:text=Trains%20depart%20EVERY%20HOUR%20from,will%20operate%20an%20Enterprise%20train). . live .
  53. News: Hogan . Laura . 2024-04-09 . Investment to cut travel time on Dublin to Belfast line . RTÉ . en . 21 January 2025 . 13 January 2025 . https://web.archive.org/web/20250121184512/https://www.rte.ie/news/regional/2024/0409/1442495-dublin-belfast-train/ . live .
  54. Web site: 2024-05-21 . Minister Ryan secures approval of DART+ Coastal North . 2025-01-13 . www.gov.ie . en . 21 May 2024 . https://web.archive.org/web/20240521221659/https://www.gov.ie/en/press-release/c0aaa-minister-ryan-secures-approval-of-dart-coastal-north/? . live .
  55. Web site: DART+ Home . 2025-01-13 . www.dartplus.ie . 28 July 2022 . https://web.archive.org/web/20220728160622/https://www.dartplus.ie/en-ie/home . live .
  56. Web site: O'Hare . Columba . 2024-04-09 . Entire Enterprise fleet to be replaced following €165m funding boost from PEACEPLUS . 2025-01-13 . Newry.ie . en-gb . 20 January 2025 . https://web.archive.org/web/20250120163437/https://www.newry.ie/articles/news/entire-enterprise-fleet-to-be-replaced-following-eur165-funding-boost-from-peaceplus . live .
  57. Web site: Andy Boal . 2025-01-13 . Ireland commits to funding Enterprise replacement from 2027 – what about NI? . 2025-01-13 . Slugger O'Toole . en-GB . 14 July 2024 . https://web.archive.org/web/20240714133201/https://www.sluggerotoole.com/2021/10/05/ireland-commits-to-funding-enterprise-replacement-from-2027-what-about-ni/ . live .
  58. News: 2024-04-09 . Enterprise: Belfast-Dublin rail to receive multi-million investment . 2025-01-13 . BBC News . en-gb . 20 January 2025 . https://web.archive.org/web/20250120163402/https://www.bbc.co.uk/news/uk-northern-ireland-68744414.amp . live .
  59. Web site: Study to investigate Belfast – Dublin – Cork high-speed line. International Railway Journal. 4 August 2020. 26 September 2020. 28 September 2020. https://web.archive.org/web/20200928091349/https://www.railjournal.com/passenger/high-speed/study-to-investigate-belfast-dublin-cork-high-speed-line/. live.
  60. Web site: Review of €15bn high-speed rail line linking Dublin, Belfast, Cork. Irish Times. 5 August 2020. 26 September 2020. 8 October 2020. https://web.archive.org/web/20201008193403/https://www.irishtimes.com/news/ireland/irish-news/review-of-15bn-high-speed-rail-line-linking-dublin-belfast-cork-1.4321928?mode=amp. live.
  61. Web site: 2023-06-26 . All-Island Strategic Rail Review Department for Infrastructure . 2025-01-13 . www.infrastructure-ni.gov.uk . en . 18 July 2024 . https://web.archive.org/web/20240718213600/https://www.infrastructure-ni.gov.uk/articles/all-island-strategic-rail-review . live .
  62. Web site: 2024-07-31 . All-Island Strategic Rail Review . 2025-01-13 . www.gov.ie . en . 14 January 2025 . https://web.archive.org/web/20250114123140/https://www.gov.ie/en/publication/cc8fc-all-island-strategic-rail-review/ . live .
  63. Book: Bolger, Dermot . The Journey Home . 2025-01-13 . Flamingo . 978-0-00-715411-1 . 1st . Ireland . 2003-09-01 . EN.
  64. Web site: Irish Enterprise North . https://web.archive.org/web/20081217055514/http://www.makingtracks-online.co.uk/index.php?option=com_content&task=view&id=60&Itemid=83 . 17 December 2008 . 2009-01-17 . Making Tracks.
  65. Web site: Irish Enterprise South . https://web.archive.org/web/20080731032651/http://www.makingtracks-online.co.uk/index.php?option=com_content&task=view&id=354&Itemid=320 . 31 July 2008 . 2009-01-17 . Making Tracks.