Train GraphicClick on the map to explore geographics
I need help
Waterloo Campaign
Travel & transport from BBC stories as at 04:15 04 Jul 2022
- The Railway Children sequel gets premiere at original Yorkshire station
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 16/07/22 - Railfuture AGM, Bristol
23/07/22 - 100 years / Hythe Pier
20/08/22 - Imber Bus
20/08/22 - Imber bus day

No 'On This Day' events reported for 4th Jul

Train RunningNo cancellations or delays
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
July 04, 2022, 04:19:55 am *
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
[214] Steam tRAIN excursion
[87] Member Roll call
[46] July 3 - No trains - replacement buses not looking good either...
[46] Where was I today? - 2 July 2022
[11] Henley Regatta Service - 2022
[8] HS2 - Government proposals, alternative routes and general dis...
News: the Great Western Coffee Shop ... keeping you up to date with travel around the South West
   Home   Help Search Calendar Login Register  
Pages: [1]
Author Topic: "Exceptional" failure of CBTC on Paris Metro  (Read 3373 times)
Transport Scholar
Hero Member
Posts: 6298

View Profile
« on: January 23, 2016, 01:34:39 pm »

Yesterday there was a total failure of Line 1 on the Paris metro. All trains stopped at 17:00, and the eleven trains stuck between stations were evacuated along the track, which took over two and a half hours. RATP say it was caused by a problem in the communications between the trains and the controller, which they describe as "exceptional" - presumably meaning it hasn't happened to them before.

Service didn't restart until 8:30 this morning, after lots of frantic work overnight. The reports are accompanied by loads of complaints about the complete lack of information, horrendously crowded stations, etc. The fact that there were three other major rail/metro disruptions at the same time didn't help.

Line 1 has been fully automatic for two years, having been converted by the installation of Siemens SAET system of CBTC (Communications-based train control) (communications-based train control). Of course it's not necessarily their fault, but ...

Several reports, but only in French, e.g. The Huffington Post.

Data Manager
Hero Member
Posts: 9262

View Profile
« Reply #1 on: January 23, 2016, 01:50:05 pm »

I thought such things only happened to the UK (United Kingdom)'s railways...  Tongue

To view my GWML (Great Western Main Line) Electrification cab video 'before and after' video comparison, as well as other videos of the new layout at Reading and 'before and after' comparisons of the Cotswold Line Redoubling scheme, see:
Transport Scholar
Hero Member
Posts: 6298

View Profile
« Reply #2 on: January 23, 2016, 03:40:43 pm »

I thought such things only happened to the UK (United Kingdom)'s railways...  Tongue

But is that a reliable thought? It's very difficult to equip yourself with comparable information about the places you know and the groups of people you belong to (whether Brits, Bristolians, or blond(e)s) and "foreign" ones (whether Parisians, Peruvians, or pilots). So I've come to the conclusion that most of our ideas about what's distinctive about "us" or "here" are pure self-delusion.

So the best default belief is that people and stuff are much the same everywhere, until and unless the contrary is proved. And, in the case of London and Paris, I'm forever being struck by the similarities, rather than the differences.

Siemens call this CBTC (Communications-based train control) system Trainguard MT; SAET is RATP's label for the system function, presumably one they used before they chose a supplier. It is installed on lines 1 and 14, and a semi-manual version of it is going into lines 3, 5, 9, 10, and 12. Line 13, however, uses Thales SelTRac (with drivers).

London Underground has so far only used Thales SelTrac, on Docklands, Jubilee, and Northern. After Bombardier found their CITYFLO 650 would need too much adaptation, SelTrac is also going to be used on the Metropolitan, District, Circle, and Hammersmith & City lines. The next contract(s) will be for the Piccadilly, Bakerloo, Central, and Waterloo & City lines, and choosing that supplier appears to be still going on.

The Victoria line has Invensys "Distance-to-Go", but I think that's more of a radio-based renewal of the previous ATO (Automatic Train Operation). (Note that "ATO" is also a standard term for automatic operation as a function of CBTC.) Sirius (another CBTC design, which Siemens acquired with Invensys) is not used in Britain. Trainguard MT has not been used so far, but will be used on Crossrail, along with a whole soup of other abbreviated signalling systems. Thameslink is different, I guess because the central "metro-like" section is so short and most of it is sharing with heavy rail. It will have ETCS (European Train Control System) level 2, with lineside signals, and some kind of ATO added "later".

Bombardier CITYFLO 650 is, however, used within Heathrow. I think that gets replaced by ETCS, due for installation all the way from Paddington by 2018 (well that was the date in August last year, anyway). CITYFLO 650 is also used in the people movers at both Heathrow and Gatwick.

Finally, in case you think North Americans don't screw up such projects, or that Thales is more reliable, there's always the Edmonton LRT Metro Line as a counter-example. Whose fault the delays are is still the subject of a four-way slanging match between Thales, and Edmonton's councillors, transportation department, and external consultants. But no-one's coming out of it smelling very good.

« Last Edit: January 23, 2016, 06:26:25 pm by stuving » 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]
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 a customer of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit 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). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page