Train GraphicClick on the map to explore geographics
 
I need help
FAQ
Emergency
About .
Travel & transport from BBC stories as at 09:55 19 Apr 2024
- Blasts heard near airport and army base, Iran media says
* Children among nine dead in Russia strike on Ukraine
- Dubai airport delays persist after UAE storm
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 02/06/24 - Summer Timetable starts
17/08/24 - Bus to Imber
27/09/25 - 200 years of passenger trains

On this day
19th Apr (1938)
Foundation, Beatties of London (link)

Train RunningCancelled
08:48 London Paddington to Swansea
Short Run
08:23 Southampton Central to Bristol Temple Meads
09:27 Carmarthen to London Paddington
09:30 Gatwick Airport to Reading
16:31 Barnstaple to Axminster
PollsThere are no open or recent polls
Abbreviation pageAcronymns and abbreviations
Stn ComparatorStation Comparator
Rail newsNews Now - live rail news feed
Site Style 1 2 3 4
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
April 19, 2024, 09:59:41 *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most recently liked subjects
[156] Rail delay compensation payments hit £100 million
[109] Rail to refuge / Travel to refuge
[63] Signage - not making it easy ...
[13] IETs at Melksham
[12] Ferry just cancelled - train tickets will be useless - advice?
[11] From Melksham to Tallinn (and back round The Baltic) by train
 
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: [1]
  Print  
Author Topic: The state of our infrastructure - UK wide - and service reliability  (Read 1207 times)
grahame
Administrator
Hero Member
*****
Posts: 40784



View Profile WWW Email
« on: June 06, 2019, 09:27:35 »

Bobm reports this morning ...

Signalling has failed on the single line.  Pilotman now travelling aboard each train between Trowbridge and Chippenham.

... and I just roll my eyes and think "not AGAIN" ... TransWilts seems to be running on signalling that might have been fit for purpose in the days when the only passenger trains were on summer saturdays - seaside trains via Oxford to Weymouth, and there was just a handful of freight trains each week.  It needs to be made much more robust.

But then ... is the TransWilts alone in having signalling that keeps breaking down under the pressure of modern traffic?   On no fewer than 4 occasions during my last week travelling around the North East, we have come to a halt at a red signal and then after a few minutes proceeded - passing it at danger.  Not only do I notice that this happened so often (4 occasions during journeys on 44 trains), but also how quickly we moved on - suggesting that it's a pretty darned common occurrence.

For the record -
Two separate places on my Retford to Barnetby journey
On my York to Hull journey
On my Darlington to Bishop Auckland journey


Network Rail have, I think, suggested that much of their work in the next five years will be in catching up on a backlog of maintenance to make things more robust.  Having seen 4 sets of signals passed at danger in a week, I can't help feeling much more sympathic to that need now.

In combination with issues that GWR (Great Western Railway) are tackling and are getting on top of (but not there yet), I really look forward to better reliability of service ... yesterday, 3 cancelled at Melksham (4, but one was re-instated) ... today so far, 2 cancelled and it's not yet 10 a.m.
Logged

Coffee Shop Admin, Acting Chair of Melksham Rail User Group, Option 24/7 Melksham Rep
SandTEngineer
Hero Member
*****
Posts: 3485


View Profile
« Reply #1 on: June 06, 2019, 11:28:55 »

Have their been any thunderstorms in the area over the past few days?.........
Logged
grahame
Administrator
Hero Member
*****
Posts: 40784



View Profile WWW Email
« Reply #2 on: June 06, 2019, 11:45:49 »

Have their been any thunderstorms in the area over the past few days?.........

There hadn't been to my knowledge ... and think it unlikey in some of the cases.
Logged

Coffee Shop Admin, Acting Chair of Melksham Rail User Group, Option 24/7 Melksham Rep
SandTEngineer
Hero Member
*****
Posts: 3485


View Profile
« Reply #3 on: June 06, 2019, 12:41:46 »

Have their been any thunderstorms in the area over the past few days?.........

There hadn't been to my knowledge ... and think it unlikey in some of the cases.

I think I've mentioned before that modern signalling equipment is very prone to effects of lightning.  Despite many attempts at a permanent cure, there is no such thing as total protection.  So, I'm afraid we will have 'live' with a certain amount of such disruption.
Logged
CyclingSid
Data Manager
Hero Member
******
Posts: 1930


Hockley viaduct


View Profile
« Reply #4 on: June 07, 2019, 07:11:32 »

Silly question. If line telephone is also solid-state electronics connected to long lengths of wire, why don't they fail as often?
Logged
SandTEngineer
Hero Member
*****
Posts: 3485


View Profile
« Reply #5 on: June 07, 2019, 16:03:10 »

Silly question. If line telephone is also solid-state electronics connected to long lengths of wire, why don't they fail as often?

Because the electronics in a signalling system have to 'Fail Safe' and shut down in the event of interference, when in a telephone system it doesn't matter if there is the odd spike or rumble on the line.  Easier to protect the latter.
Logged
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

 
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by customers of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link to report). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page