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Old February 25th, 2017, 12:42 PM   #41
Gusiluz
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ETCS 3 ERSAT EAV

Satellite train location technology tested in Italy. IRJ
ERTMS with satellite positioning trial completed. Railway Gazette

Quote:
Testing of the ERSAT EAV satellite signalling system concluded on February 24, when the operation of the technology was demonstrated to guests including Mr Josef Doppelbauer, executive director of the EU Agency for Railways, Mr Jean-Pierre Loubinoux, director of the International Union of Railways (UIC) and Mr Libor Lochman, director of the Community of European Railway (CER) on the Cagliari - Decimomannu line in Sicily.
In fact it has been in Sardinia, stretch Cagliari-San Gavino, of 50 km. The tests were scheduled until 01/02/2017 so deadlines have been met.

The new ERSAT EAV system from Ansaldo STS (there is also another one with ETCS 3: the ERTMS Regional from Bombardier) consists of an ERTMS that integrates ETCS level 3 and works through satellites of the Galileo system, and public GSM (like anyone with a mobile). The main novelty is that it uses virtual balises created by the system every 50 meters; to ensure its integrity, the train receives (in head and tail) the signal from the satellites using the LDS (Location Detection System).

If this system works well (and this is what it seems so far) we will have, throughout Europe and for export, a low-cost train control option for regional and low-traffic rail routes.

As I see it, the system does not need anything at the foot of track except, if necessary, to ensure the integrity of the rail itself before a break, through the current system. It installs ETCS and two LDS in the trains, a RBC (Radio Block Center) and a CRC (Center for Regulation and Control) anywhere ... et voilà. Cheaper can not be.
Very little investment (saving of up to 60% in the telecoms component over GSM-R) and very little maintenance.

With this system, regional lines with little traffic will be more viable, as maintenance costs are reduced.
And all this with much more security and reliability than the current systems, such as Telephone Blocking.

Many more details and explanations (in Spanish, but with links in English) in his post in spanish Thread in SSC.

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Old February 26th, 2017, 05:32 PM   #42
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ETCS Regional is not ETCS Level 3. It's more like ETCS Level 4: same technology as level 3, but for lines with a lot less traffic (even less than lines with level 1).

Now there's at least a stable Baseline 3, the manufacturers should really start with a working level 3 implementation. My suggestions for possible lines:

* LGV Sud-Est : 100% usage rate during weekdays, as TVM300 only allows for 4 minute headways. Could be overlaid on top of existing TVM300, as shall be done on LGV Sud-Europe Atlantique (ETCS L2 overlaid on top of TVM300)

* Brussels North-South tunnel : 96% of line capacity used during weekdays, classic signalling in combination with on-sight driving at the entry of Brussels-Central station only allows for 1.5 minute headways (capacity limited to 96 trains per hour, so 48 trains in each direction).

* Some RER lines in Paris should be considered also, with the same capacity issues like the Brussels N/S connection..
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Old February 26th, 2017, 07:25 PM   #43
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Do not confuse Baseline 3 with ETCS 3. They do not look alike.
Baseline 3 is the latest software standard.
The Baseline 2 standard, adopted by the EU in 2008, is software 2.3.0.d
Baseline 3 is software 3.5.0

Each level of ETCS can be used for different types of lines, there are freight lines with level 2 and HSL with level 1. At the moment the two solutions with ETCS 3 are for lines with low density, but that can change at any time.
These systems also do not use the technology they announced for ETCS 3: mobile blocks.
There is no ETCS 4.

Last edited by Gusiluz; February 26th, 2017 at 07:36 PM. Reason: Improve translation
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Old February 27th, 2017, 06:33 PM   #44
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Does ETCS Regional have a protocol for tunnels, such as no two trains in the same track in the same tunnel at any time? Or does it have repeater protocols for challenging sectors, including not only tunnels but also deep trenches, or certain heavily forested mountainous sections?
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Old February 27th, 2017, 07:14 PM   #45
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The theoretical ETCS 3, before these low-cost solutions, talked about that the positioning of the train in the tunnels would be carried out with fixed balise and by the odometer of the vehicle. But the ERTMS Regional does not use it, probably because there will be very few tunnels in Sweden, and because they are low density lines. Until another train leaves, another can not enter.
I will look for some source in English.
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Old March 3rd, 2017, 01:41 PM   #46
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The only UK ERTMS equipped line starts at the end of my back yard.
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Old March 5th, 2017, 07:24 PM   #47
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Quote:
Originally Posted by btrs View Post
(...)with on-sight driving at the entry of Brussels-Central station
On sight driving is strictly forbidden in Brussels Central since at least 2 years... Even if the entrance signals are still showing this aspect.
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Old April 5th, 2017, 04:59 PM   #48
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Quote:
Originally Posted by Jonesy55 View Post
The only UK ERTMS equipped line starts at the end of my back yard.
Isn't HS1 fitted with ERTMS
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Old April 7th, 2017, 12:44 PM   #49
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No, with the French TVM system, afaik.
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Old April 20th, 2017, 11:13 PM   #50
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Portuguese IP/refer in the recent publication says that ertms will be put into service by 2020
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Old April 21st, 2017, 12:23 AM   #51
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I believe (and the EU, too) not.

All the Portuguese part of the Atlantic Corridor (Porto-Aveiro-Lisbon for two routes and what you see in the image) should be between 2023 and 2030 (to be detailed in 2023).

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Old April 21st, 2017, 12:47 AM   #52
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Pluck the EU's beliefs ... since 2015 that those timelines don't apply ... the socialists are back in power.
And by the way ... your link gives this:
Quote:
Page not found
The requested page could not be found.

Algarve line electrification:
http://www.infraestruturasdeportugal..._20jan2017.pdf
http://www.infraestruturasdeportugal...nha-do-algarve

Minho line will be electrified also (Porto-Vigo) and the douro line up to Regua.
http://www.infraestruturasdeportugal...linha-do-minho
http://www.infraestruturasdeportugal...nine_viana.pdf


http://www.portugal.gov.pt/media/186...s-ferrovia.pdf

Also ... EBICAB700 +gsm are both present in the entire main network and the move to ERTMS is just a matter of changing the current equipment for newer hardware (ERTMS1 compatible).

Bridging that generation gap (EBICAB>ERTMS1) is not that of an investment in the small 2000km network since for the last 20 years the entire nationwide instalation of new ATP systems is convertible to ERTMS. And this is the point wich diferentiates portugal and spain ... ASFA hardware is not compatible with ERTMS while EBICAB hardware is convertible to ETCS and the rest(gsm-r) is already installed and in service.

The current track upgrades (in Norte and Beira alta) and the electrifications (in Minho Oeste Algarve and Douro) include upgrading the signaling to ERTMS standards. Let's hope the axe doesn't fall (again be)fore it is implemented.


Notice: Gusiluz ... wasn't spain the AVE country where suddenly they found out the HSR was empty???
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Last edited by sotavento; April 21st, 2017 at 01:13 AM.
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Old April 21st, 2017, 11:34 AM   #53
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No.


It has nothing to do with the subject.
I do not like your conversation tone at all.
Bye.
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Last edited by Gusiluz; April 21st, 2017 at 01:24 PM. Reason: Put the picture
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