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Numerous Speed Restrictions / Delays Due to Defective Track on Southern Region

mcmad

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11 Mar 2015
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The high output ballast cleaning machines are absolutely ideal for track lowering but NR has mothballed them. They never got much use in Southern area as the level of cable disconnection is several times higher than even AC electrified areas due to the positive and negative cabling and impednace bonds. That said its still the best machine for track lowering.

Theres still one set operating on whatever LNW is called now. Having said that they're only good for track lowers if the underlying formation and subsoil is adequate as they can't install any sort of formation treatment. The Paisley Canal line had aggressive track lowers completed for the electrification project by the medium output cleaner (the HOBC's older cousin) and the ride quality along there is now suffering as the lowers removed the formation treatment between the former canal clay lining and the ballast with predictable results.
 
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Recessio

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There have been problems on the line east of Lewes for many years. The low embankment between the Cuckmere river and Wilmington LC had a TSR in the mid 1970s with multiple attempts at fixing it with ballast before a more permanent repair was effected.
There's a jolt on a bridge between Southease and Lewes that I've contacted GTR about at least twice over the last few years. One time so bad the conductor actually fell over - that's when I thought maybe it was getting a bit much - though maybe it's just due to the generally crap ride on Electrostars making it feel worse than it is.
 

Wolfie

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Seems that since the Lewes incident, there have been a lot of speed restrictions all over the network, with numerous train delays due to "defective rail"! Last Friday (28th July) The Arun Valley Line was essentially out of action, as was (If I remember rightly) the Uckfield Line? A couple of trains I have been on now they have told us over the announcement that we have to go slow due to the track!

Is this limited to the Southern Region? Has the heat messed up so much track?
C2C are in the same situation.
 

Jim

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11 Jun 2005
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Thanks both.

I don't really get to see what happens on that section of the line. I just stand on the platform at Lewes staring at the signalling diagram wondering why the train to Brighton is taking forever and why it's always late.... and wishing I'd got one that came from Seaford!
When you get two trains in quick succession from Eastbourne, especially during the peaks you can get a bit of congestion, as the 20mph bit is in one of the longest signal sections on that stretch, just outside of Berwick (Lewes side) to basically Glynde station.

== Doublepost prevention - post automatically merged: ==

There's a jolt on a bridge between Southease and Lewes that I've contacted GTR about at least twice over the last few years. One time so bad the conductor actually fell over - that's when I thought maybe it was getting a bit much - though maybe it's just due to the generally crap ride on Electrostars making it feel worse than it is.
That seemed to get better after the scaffolding was on the bridge lately I thought, not sure if the work was related or not mind!
 

Chiltern 165

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11 Aug 2024
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This isnt limited to Southern, the number of rough ride reports has increased everywhere with drivers being more cautious since both Lewes and Wickford.

The heat, dryness and subsequent sudden wet spells have definitely had an impact on the durability of the track, as well as introducing new sites that may not have been as closely monitored before.

The trouble with the 'Rough Ride', is that once its reported, you cant just run a train over it to check and then go back to line speed. A competent person has to come and inspect the track. Until then all movements over it are at 20mph (in most cases).

The two ugly sides of the coin are the train service and the track inspections themselves.

The temporary 20mph imposed while waiting for a competent person then has the associated slowing down before reaching the affected area, and getting back to line speed afterwards, both adding time. Not to mention the signaller having to stop and caution each train over the section, including getting the first train after the initial report to make contact and share their findings in order to eliminate the job stoppers (broken rails, missing pairs of fishcakes etc).

The other side is that there is only a finite amount of P-Way personnel at any given time to go and inspect the track, so the more reports, the more they are doing. Some of these teams cover a huge area and most of the time they need to stop train running to carry out an initial inspection.

Once they have inspected the site they will normally impose a higher speed and work gradually up until a speed that is sensible if not line speed.
They have no PWAY available yet they have people available with TSR signs? Is it MOMs putting it up?
 

RailwayRookie

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Norfolk
They have no PWAY available yet they have people available with TSR signs? Is it MOMs putting it up?
You'd be surprised how long it takes signs to go up after a rough ride. The initial response is a signaller imposed ESR, which means stopping and advising every train.

Then you can get into signed ESRs which need to be planned to account for varied braking distances, then after long enough the arrangements will be published and made into a TSR.

In more simple cases the night PWAY teams will come out, lift and pack ballast as appropriate and return the line to permissible speed the same night, sometimes they will set a reduced speed but be ready with the boards as part of their work. Its quite dynamic.

But to answer your question. It takes one person to board an ESR. It takes more than one to reset the track. But a MOM will carry both the signs and the competence to do it should they need to.
 

Chiltern 165

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You'd be surprised how long it takes signs to go up after a rough ride. The initial response is a signaller imposed ESR, which means stopping and advising every train.

Then you can get into signed ESRs which need to be planned to account for varied braking distances, then after long enough the arrangements will be published and made into a TSR.

In more simple cases the night PWAY teams will come out, lift and pack ballast as appropriate and return the line to permissible speed the same night, sometimes they will set a reduced speed but be ready with the boards as part of their work. Its quite dynamic.

But to answer your question. It takes one person to board an ESR. It takes more than one to reset the track. But a MOM will carry both the signs and the competence to do it should they need to.
I thought signallers have a facility to impose a general broadcast on every train once they pass a certain point? Do you know why that isn't used?
 

RailwayRookie

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I thought signallers have a facility to impose a general broadcast on every train once they pass a certain point? Do you know why that isn't used?
In the instance of a signaller imposed restriction, it cannot be used.

It is only used to advise for missing/defective/obscured lineside equipment. And even then it has to be acknowledged by the driver before the signal is cleared so it isnt applicable to a lot of places.

You may be thinking of an  advisory broadcast to remind drivers of a Blanket Speed restriction, but they aren't ever boarded and cover a much larger area but not for rail defects.
 

Mattplans

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27 Sep 2024
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Nearby, Southeastern's Hastings line has been badly hit.

One of the worst services I can see is 17:45 London Charing Cross to 19:29 Hastings which has only ran on time once since June.

A lot of services being cut short at London Bridge as a result.

Even without this dry spell, the Kent AM peak is easily disrupted in the "London area" by speed restrictions on the Chatham or Tonbridge routes causing them to delay the on-time services when they get to the Lewisham pinch point(s). I used to travel on a service to Cannon Street that was delayed by the same train every day from Broadstairs before I switched trains. Now my commute is delayed by a train from the Tonbridge side. : )
 
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Chrisgr31

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On the Uckfield Line it has got even worse. It was suggested the emergency timetable was going to be extended from 15th September to 8th October. However before they could tell the passengers am operational incident involving a set of points has meant a severe reduction in services and it’s now every other hour. The suggestion is that the crew fixing the track defects damaged the points but that’s only a rumour.

Now seems the current emergency emergency timetable will be in place until the 19th
 

mrl3bon

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Having travelled the Eastbourne to London route for 20+ years I wasl well aware of the “Lewes Lurch” on the down line before Lewes.

I travelled for the first time since the derailment this week and was surprised that it was still there and also the general ride being not exactly smooth.

That is except for the new bit they have put in to repair the damage.
 

Nicholas Lewis

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Having travelled the Eastbourne to London route for 20+ years I wasl well aware of the “Lewes Lurch” on the down line before Lewes.

I travelled for the first time since the derailment this week and was surprised that it was still there and also the general ride being not exactly smooth.

That is except for the new bit they have put in to repair the damage.
This line and the Arun Valley have always had poorer track quality compared to the Brighton Line (BML) for last 20 years in my experience as well.

They are of course branch lines and due to lower track tonnages are allocated a lower track categorisation compared to BML. This means they receive a reduced frequency of visual and measurement train inspections although line speed determines when intervention is required which is same band as BML. Also in the past access to tamping resource was reduced for lower category routes but not sure if thats still the policy. So along with this years earthworks issues im sure the local maintenance teams are being kept somewhat busy.
 

London Trains

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which is all well and good but it then means that the don’t have enough carriages to run the full peak hours service.

They have said that the 7.33 ex Uckfield will run with extra carriages to makeup for the loss of the 7.03. That’s all well and good except a lot of passengers on the 7.03 have actually changed to the 6.33 as otherwise they’d be late for work.

The 6.33 is meant to be 8 carriages but on Tuesday and Wednesday was 5 and today and yesterday was 3!

The outcome is a huge amount of complaints from passengers about overcrowding. There are similar issues for the evening peak as well where the 8 carriage trains appear to have been reduced to 5.
To add to the confusion, Southern have written on the website that the 7:03 isn't running, but yesterday and today the service actually did run, for the first time in nearly 2 months.
 

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