Cardiff Central railway station is a major station on the South Wales Main Line, located in the capital of Wales, Cardiff. It is one of the city's two urban rail network hubs, along with Cardiff Queen Street. Opened in 1850 as Cardiff station, it was renamed Cardiff General in 1924, and then Cardiff Central in 1973.
The North Wales Coast Line, also known as the North Wales Main Line, is a major railway line in the north of Wales and Cheshire, England, running from Crewe on the West Coast Main Line to Holyhead on the Isle of Anglesey. The line has 19 stations, with all except two, Chester and Crewe, being in Wales.
Newport railway station is the second-busiest railway station in Wales, situated in Newport city centre. It is 133.5 miles (215 km) from London Paddington on the British railway network.
The Merthyr line is a commuter railway line in South Wales from central Cardiff to Merthyr Tydfil and Aberdare. The line is part of the Cardiff urban rail network, known as the Valley Lines.
The Rhondda line, also known as the Treherbert line, is a commuter railway line in South Wales from Cardiff to Treherbert. The line follows the Merthyr line as far as Pontypridd, where it then diverges to continue along the Rhondda Valley.
The Butetown branch line, also known as the Cardiff Bay Line, is a 1-mile-6-chain (1.7 km) commuter railway line in Cardiff, Wales from Cardiff Bay to Cardiff Queen Street. The service pattern used to comprise a mixture of shuttle services along the branch and through trains along the Rhymney Line to Caerphilly, or the Coryton Line to Coryton, but since December 2005 is a shuttle service from Queen Street station. The normal journey time is four minutes.
The Vale of Glamorgan Line is a commuter railway line in Wales, running through the Vale of Glamorgan from Barry to Bridgend, via Rhoose and Llantwit Major.
Cardiff Bay railway station, formerly Cardiff Bute Road, is a station serving the Cardiff Bay and Butetown areas of Cardiff, Wales. It is the southern terminus of the Butetown branch line 1 mile (1.5 km) south of Cardiff Queen Street.
Llanwern railway station is a former station serving Llanwern on the east side of the city of Newport.
Abercynon railway station is the railway station serving the village of Abercynon in the Cynon Valley, Wales. It is located on the Merthyr Line, 15.5 miles (25 km) north of Cardiff Central. Passenger services are provided by Transport for Wales.
Caerleon railway station is a former station serving Caerleon on the east side of the city of Newport, UK and a proposed future station as part of the South Wales Metro.
In the 2010s Network Rail modernised the Great Western Main Line, the South Wales Main Line, and other associated lines. The modernisation plans were announced at separate times but their implementation overlapped in the 2010s.
Rail transport in Cardiff has developed to provide connections to many other major cities in the United Kingdom, and to provide an urban rail network for the city and its commuter towns in southeast Wales. Today, there are three train operating companies in Cardiff: Great Western Railway, CrossCountry and Transport for Wales.
The South Wales Metro is an integrated heavy rail, light rail and bus-based public transport services and systems network currently being developed in South East Wales around the hub of Cardiff Central. The first phase was approved for development in October 2013. Works are currently under way, with a brand new depot under construction at Taff's Well and new trains being built at the Construcciones y Auxiliar de Ferrocarriles (CAF) 15,000 m2 factory in Newport. The development will also include the electrification of the core Valley Lines and new stations. This will be the biggest overhaul to the railways of South Wales since their construction 170 years ago.
Cardiff Parkway is a planned railway station in the eastern region of Cardiff, and near to the boundary with the neighbouring city of Newport. The station is privately funded as part of the wider Cardiff Hendre Lakes business development.
Butetown, formerly Loudoun Square is a planned station in Cardiff on the Butetown branch line. It is included within the Wales & Borders franchise and will be part of the South Wales Metro.
Gabalfa is a proposed railway station on the Merthyr line in the Gabalfa district of Cardiff, Wales. The station would be on the South Wales Metro and be part of the Wales & Borders franchise. It is planned to open in 2028. It will be located on an old coal yard next to the existing railway. This followed significant local petitioning for a railway station from Gabalfa and Mynachdy.
The Class 398 Citylink is a fleet of 36 tram-train multiple units being built for Transport for Wales Rail by Swiss rolling stock manufacturer Stadler Rail.
West Wales Parkway is a proposed railway station north of Swansea, near to the boundaries of the neighbouring principal area of Carmarthenshire, and the villages of Felindre and Llangyfelach. The station is proposed to be situated at the former Felindre steelworks, near Junction 46 of the M4 and A48, and near Felindre Business Park and Penllergaer Business Park. The project is in the planning stages, as part of a wider Department for Transport proposal to re-open the Swansea District line to passenger traffic.
National Rail 
