A fault with the signalling system at Southampton Central means that fewer trains are ale to run on some lines. Trains running through this station may be delayed or terminated at and started back from Portsmouth & Southsea.
Disruption is expected until 10:00.
Customer advice:
Southern services that run to / from Southampton are expected to be disrupted by a fault with the signalling system in the area.
- Delays of around 10-15 minutes are possible
- Services that normally run between Brighton and Southampton may be amended to run between Brighton and Portsmouth & Southsea instead
Please check before you travel this morning, as you may need to change trains in order to complete your journey. We'd advise allowing an extra 20 minutes travel time as a result.
Tickets will be accepted for no extra cost on South Western Railway and Great Western Railway services between Portsmouth and Southampton.
Planning your journey:
Live departure boards can be found here.
You can view a live map of the network here.
You can also see an alternative route guide here.
You can also the Southern app to find up-to-date information.
Can you tell me more about the incident?
A track circuit failure will disrupt your journey in the Southampton area.
This part of the network uses track circuits to detect the position of trains. These are electrical systems which monitor whether a train is on a section of track. They operate as part of the signalling system, which is designed to be "fail safe".
When a track circuit fails, the signalling system will interpret this as a train remaining in place, even though there may not be a train present at all, or the previous service may have long since left the area.
As a result, further trains cannot be automatically allowed onto the relevant section of track. Train drivers will be stopped by red signals on approach. They will then get verbal permission from the signaller so that they can proceed, and will run at a heavily-reduced speed as far as the next signal. This is so that the drivers will stop safely if they see anything ahead of them.
In some areas, the sections between signals can be several miles long, so this can result in delays building up. Even with shorter sections of track affected, there would still be a delay of at least a few minutes to each journey.
Track circuit faults can be caused by a number of different issues, including electronic faults or obstructions on the track. Network Rail manage the signalling system, including track circuits, and their staff will be investigating as quickly as possible.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.