Metro transformation work: changes to train services

How it will affect your journey plans

While we build this better transport network over the next few years, it may mean temporary periods of change to your journey plans. Where possible we are scheduling the transformation work to take place during less busy times to minimise disruption and offering connections between rail services and bus services.


Metro transformation work: Rail replacement bus services

  • Service changes | Cardiff Central – Radyr – Pontypridd – Merthyr Tydfil/Aberdare/Treherbert | Sunday – Thursday, from late evening onwards
    • Improvement work is taking place on the Treherbert, Aberdare, Merthyr Tydfil and City lines from Cardiff Central station northwards.

      The work will take place late evening and overnight Sundays through to Thursdays during this period, closing this part of the network from 20:00 to 05:00.

      Evening City Line services - ticket acceptance has been agreed with Cardiff Bus from 21:00 visit
      From Monday 04 April 2022 Mondays -Thursdays only

      Early morning train services will not be affected and will run as usual.

      Cardiff Central – Radur – Pontypridd – Merthyr/Aberdare/Treherbert map

  • Service changes | Caerphilly - Rhymney | Mondays - Thursdays and Sundays, from late evening onwards
    • Caerphilly - Rhymney map

  • Pontypridd - Merthyr Tydfil | Tuesday 11 October - Thursday 03 November, all day
    • We’re electrifying around 170 km of track on the Aberdare, Coryton, Merthyr Tydfil, Rhymney 
      and Treherbert lines, as well as the City line between Ninian Park and Radyr to power our 
      faster, greener new tram-trains. This line closure will allow our engineers to carry out complex 
      work including:

      • Over-head line equipment installation to power our new trains
      • Track works to make line speed improvements
      • Platform improvements to accommodate the new trains

      Pontypridd - Merthyr Tydfil

  • Cardiff Central - Caerphilly | Monday 17 October - Thursday 20 October, late nights
    • Cardiff Central - Caerphilly

  • Travel Advice FAQs
    • What work will be undertaken during this period?

      A whole package of works is planned including track and signalling work along with general maintenance.
      Find out all about Metro here.


      What will I expect when I arrive at the Radyr station inter-change hub?

      Radyr station will act as the main inter-change hub between rail and bus services. Customer service teams will be at hand at Radyr station to direct customers to and from the inter-change hub situated in the adjacent car park. Road transport has been arranged to link in with train services to keep wait times to a minimum. Toilet and shelter facilities will be available.


      Where will I be picked up or dropped off at my local station?

      Most bus service pick up / drop up points are situated outside the station. They will be clearly signposted but you can check out the location of your rail replacement bus stop here (choose your station then Car Park Information) or on the Useful Information Poster at your station.


      I usually take my bike on the train as I need it for onwards travel – can I take it on the bus service?

      Normally bikes are not permitted on rail replacement bus services however where possible bikes may be carried dependent on the driver’s discretion and space available. Any bikes carried on our bus services is at your own risk and Transport for Wales cannot accept responsibility for any damages.


      Can I take my dog on the bus service?

      Normally dogs are not permitted on rail replacement bus services except guide dogs.


      Can you take prams on the bus service?

      Prams are allowed however we ask that they are folded up before boarding.


      How much extra time will the bus service leg of my journey add to my overall journey?

      For the exact times you will need to check your specific journey plans but here’s a guide for some key journeys. These are based on average times for the time of night travelled.

      Route Approx bus service times
      Radyr - Pontypridd 00:35 hrs
      Radyr - Merthyr Tydfil 01:20hrs
      Radyr - Aberdare 01:20hrs
      Radyr – Treherbert 01:25 hrs


      Can I buy a ticket on the bus?

      There are no ticket purchasing facilities on board buses. Tickets must be bought before boarding a bus at your local booking office, ticket machines, on-line using our journey planner or from our app.


      I am a wheelchair user, can I access the rail replacement bus service?

      The buses are wheelchair accessible with low loading floors. For advice and to book assistance in advance call our Passenger Assist team 03330 050 501.

Future improvement work

For planned improvement works across our network that can affect the timetable please visit this page

Planned improvement work