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Topic: Re:Possible in today Chiswick station. Level Crossing down Grove Park
Posted by: Ian Wylie
Date/Time: 23/10/14 09:15:00

This may clarify. South West Trains update at 0841:

Cancellations to services between Barnes Bridge and Hounslow:

Owing to signalling problems between Barnes Bridge and Hounslow all lines are blocked.

Impact:

Train services running through these stations may be cancelled, delayed by up to 20 mins or diverted via Twickenham at short notice. All stations between Barnes Bridge and Hounslow will not be served. Disruption is expected until 11:00 23/10.

Customer Advice:

We have multiple track circuit problems reported on the line at stations between Barnes Bridge and Hounslow this morning. This is affecting the way trains are signalled on the line through all the stations in the area affected (Information on what a track circuit failure is can be found http://bit.ly/tcfailure).

Trains that normally run through the 'Hounslow Loop' will need to be altered or cancelled while our engineering teams work on rectifying the problem they have found. There is no firm estimate yet of how long disruption will last but it is likely to continue until at least 11:00.

The following trains that run through this area have had their schedules changed to reflect the lack of infrastructure available to run trains:

London Waterloo to Hounslow trains will be cancelled in both directions
London Waterloo to London Waterloo 'Rounder' trains that travel via Barnes and Hounslow will be cancelled in both directions.
London Waterloo to Weybridge via Staines trains will travel via Twickenham and stop additionally at Richmond and Twickenham.

Alternative Transportation:

Customers with South West Trains tickets affected by this problem will be able to use London Buses and London Underground services this morning.
** The District line and London Overground trains have been suspended between Turnham Green / South Acton and Richmond due to a signal failure at Gunnersbury**.

Further Information :

The rail network is divided into sections with each forming a separate electric circuit which provides a vital function: they allow signallers to see where the train is.

They use this to make sure trains keep a safe distance apart. When a track circuit fails we have to stop trains until alternative signalling arrangements are introduced or the problem is fixed.

Track circuits can fail for many reasons, from flood water causing a short circuit to a layer of crushed leaves insulating the wheels from the track, preventing the axle from completing the circuit, effectively making the train invisible to the signaller.


Entire Thread
TopicDate PostedPosted By
Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 08:18:00 Sean Wales
   Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 08:18:00 Sean Wales
      Re:Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 08:47:00 Dan Murphy
         Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 09:15:00 Ian Wylie
            Re:Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 09:22:00 Andy Pease
               Re:Re:Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 09:40:00 Thomas Barry
   Re:Possible in today Chiswick station. Level Crossing down Grove Park23/10/14 09:54:00 Sean Wales

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