News   Nov 22, 2024
 425     1 
News   Nov 22, 2024
 883     4 
News   Nov 22, 2024
 2.3K     6 

New GO Train Control+Signalling (PTC, CBTC, ETC) -- Safety & Subway-Like Frequency

(moving order of posts...moving an older post to bottom to try to put things on topic.
Not a repost, this is a full move -- no post of any kind exists in its original location)

There are many variants and brands of CBTC.

Here's the Thales brand:


I would presume there is some kind of connection or hierarchy that will lead to the new GO operations centre at Oakville, probablay being optimized for the future CBTC era. How strongly or tenuously linked, or if it is where the CBTC central computer will be too, we do not know, but it likely would streamline operations to have some process where central can order other trains to do something based on info received from CBTC.

Little things like quicker more-complex games of musical chairs (track reassignments before too late, before passing the last switch) to prevent a bigger delay cascade, more seamlessly get around an unexpected event, or other mudane curveballs that unexpected train problems, emergencies, equipment or infra issues, etc.

Either dispatched manually based on CBTC data and other sources of info, or automatically by a central computer - either situation could occur for specific situations depending on how it is all set up.

I am assuming Metrolinx's 800 million dollar quote for GO-wide CBTC refers to the whole electrified network rather than just the EMU routes? It is a major undertaking. Just look at TTC and New York City Taking more than a decade to install CBTC, and only on one or two lines. CBTC construction is faster on the surface routes, but it is a major undertaking.

It is a megaproject unto itself, and a delay in rolling out a more complex CBTC plan defacto means a big delay in introducing a tight peak-period 4-or-5-minute GO RER headways and 1 train a minute leaving Union (49 trains per hour as documented).

Depending on the plan allowing for it, you could properly plan to stagger CBTC introduction and use it to add trains gradually. This might mean CBTC might continue to deploy well past 2025.
 
Last edited:
It should be noted that all of OC Transpo's operations, including the buses are federally regulated. For example, AODA doesn't apply to OC Transpo, though they follow it in spirit.
Interesting! I'll Google on that, albeit my reference to their light-rail operation being federally regulated was itemized in their TC approval for operating their initial light-rail operation. I'll Google and edit in the link later.

Perhaps their buses are also federally regulated due to crossing the border, or being able to, albeit I wonder why they're not licensed in two provinces, rather than Federally. This is interesting...

Edit to Add: Catenary is proven correct on this, will dig further to find the jurisdictional vagaries underlying this:
[...]In 2009, the City approved its first ever Accessibility Standards for Customer Service Policy that met the requirements of the Accessibility for Ontarians
with Disabilities Act (AODA). Under the AODA, private, public and non-profit organizations are required to identify, remove and prevent barriers in order
to make the Province fully accessible for all people with disabilities by 2025.

Although not technically bound by the AODA because OC Transpo is federally regulated, Transit Services has continued to demonstrate its commitment to providing fully accessible transit service for all customers.][...]
http://www.aoda.ca/oc-transpo-formalizes-its-accessible-customer-service-policy/

We are creeping off-topic, a nod to MD, but this might have inverse implications to applying precedents set by the OCTranspo model to other jurisdictions in Ontario or other provinces.
 
Last edited:
For new content, here's TTC's own video about their CBTC deployment to shorten headways on Yonge:


Presumably, in due time (perhaps 2018, 2019?), we may see an equivalent from GO's social media, especially once Metrolinx has procured vendors and know the capabilities of the system they're getting.
 
For new content, here's TTC's own video about their CBTC deployment to shorten headways on Yonge:


Presumably, in due time (perhaps 2018, 2019?), we may see an equivalent from GO's social media, especially once Metrolinx has procured vendors and know the capabilities of the system they're getting.
Many would dismiss the applicability of this example to Metrolinx, and perhaps, as the *regulatory issues* as they now stand, might hinder this, it *has to become * applicable with changes to various acts, federal and provincial, to affect progress and best practice to allow that. Your often mentioning Metrolinx reports alluding to it indicate that there are at least some, if not many, in Metrolinx and Queen's Park who realize same. The Docklands Light Railway, for instance, showcased this along with other "totally automated" systems, and as the new Montreal light rail proposal envisages.

One aspect available to surface rail but not to subway is GPS, at least in the satellite provisioned form now extant. Even in the next couple of years, I suspect CBTC will jump magnitudes in affordability, accuracy and available control parameters.

Edit to Add: Just Googling to find that the Dockland LR uses Thales, as you linked prior. Excellent description of 'SelTrac' here:
https://www.thalesgroup.com/sites/default/files/asset/document/SelTracBrochure_CBTCSolutions_eng.pdf
Discussion here:
http://www.gradplus.com/graduate-jobs-courses/graduate-case-studies/detail.aspx?CaseStudyID=102

I see that it is being marketed for "Heavy Rail" as well.
 
Last edited:
Where in North America or even in Europe has CBTC been deployed in a mainline railway?
 
Where in North America or even in Europe has CBTC been deployed in a mainline railway?
CBTC is steadily gaining in popularity as the train control system of choice for both new and existing metro lines, and it is starting to be adopted by some mainline railways for their busiest commuter lines. The appeal is the ability to automate a metro line and thereby drive up capacity, while at the same time reduce costs and increase flexibility if the decision is made to eliminate drivers.

Until now Japanese railways and metros have eschewed CBTC in favour of domestic technology and systems even though one domestic supplier, Nippon Signal, has developed its own CBTC system called Sparcs which has been in operation on Beijing metro's Line 15 since December 2011. Nippon Signal recently won contracts to install Sparcs on Line 8 of the Delhi metro and the new 23.6km Gimpo Urban Railway in Korea.

This could all change following JR East's decision to allow Thales to install CBTC on its busy Joban commuter line in Tokyo. JR East says it is focusing on radio-based train control systems to simplify wayside equipment and is keen to compare its own Atacs system, which will be introduced on the Saikyo line in 2017, with CBTC when this comes into service on the Joban line in 2020. The first Atacs system was put into operation on the Senseki line in Sendai in October 2011 and has similar functionality to ETCS Level 3 or CBTC.

JR East says Atacs has proved to be even more reliable than expected in its first two years of operation in Sendai with a system reliability rate of 99.99999%, no location recognition errors in either refreshing a train's location or switching between Atacs and ATP, and no radio quality handover errors. Finally, JR East says it achieved a failure time of just 6 seconds. It will be interesting to see if CBTC can match these impressive figures.

SOUTHEASTERN Pennsylvania Transportation Authority (Septa) has awarded Ansaldo STS, a Hitachi Group Company, a $US 53m contract to install communications-based train control (CBTC) on the Media and Sharon Hill lines of Septa's light rail network.

The work includes civil works, track switch replacement and upgrades to the existing signalling system including installation, testing, and commissioning. The new system will provide centralised supervision and scheduling from Septa's integrated control centre and will increase the lines' safety and performance.

The Sharon Hills lines consist of the 13.8km Media - 69th Street Line 101, and the 8.5km Sharon Hill - 69th Street Line 102, which share infrastructure between Drexel Hill Junction and 69th street.

Following decades of under investment, Septa is currently engaged in a $US 2.3bn five-year capital project funding programme as it attempts to repair ageing infrastructure and improve capacity across its metro, suburban and light rail networks. Earlier this week it confirmed an order with Siemens for 13 ACS-64 electric locomotives for commuter services. It is also working with Ansaldo STS to install Positive Train Control on its 13-line commuter rail network. [...]

Meantime, SEPTA is embracing it for Light Rail:
SOUTHEASTERN Pennsylvania Transportation Authority (Septa) has awarded Ansaldo STS, a Hitachi Group Company, a $US 53m contract to install communications-based train control (CBTC) on the Media and Sharon Hill lines of Septa's light rail network.

The work includes civil works, track switch replacement and upgrades to the existing signalling system including installation, testing, and commissioning. The new system will provide centralised supervision and scheduling from Septa's integrated control centre and will increase the lines' safety and performance.

The Sharon Hills lines consist of the 13.8km Media - 69th Street Line 101, and the 8.5km Sharon Hill - 69th Street Line 102, which share infrastructure between Drexel Hill Junction and 69th street.

Following decades of under investment, Septa is currently engaged in a $US 2.3bn five-year capital project funding programme as it attempts to repair ageing infrastructure and improve capacity across its metro, suburban and light rail networks. Earlier this week it confirmed an order with Siemens for 13 ACS-64 electric locomotives for commuter services. It is also working with Ansaldo STS to install Positive Train Control on its 13-line commuter rail network.[...]
http://www.railjournal.com/index.ph...rds-light-rail-cbtc-contract.html?channel=000

I'll list more examples later.
 
Where in North America or even in Europe has CBTC been deployed in a mainline railway?
They have a system more advanced than North America already, European Train Control System (ETCS), with its various Levels of functionality (Level 1, Level 2, etc) so a little less urgent for them than us.

There appears to be a migration path to including many CBTC features in ETCS including moving blocks, though it is not a perfect overlap. (CrossRail installs both systems due to this). They already will have many more moving block systems than we do by the time we begin constrction...

On the flip side, I would argue that increasingly, the Bramalea-Unionville is slowly increasingly no longer really traditional "mainline" anymore from a Transport Canada regulatory perspective, and nor will be Union-Aurora after the Davenport bridge. (These are the EMU routes in the RER business plan). With at-grade crossings gone from the high-frequency core routes, and CBTC in the picture, a threshold may be crossed.

Several of these now-Metrolinx owned route sections have specific tracks that see virtually no daytime freight nowadays, with fewer and fewer freight customers (at least daytime) in specific areas in the inner areas at least. VIA on the Weston sub is another matter altogether, but may be ruled by track assignment, greater train separation rules for VIA trains between lighter GO EMUs, CBTC onboard the VIA trains, and details. LSW is tougher as it has more freight in its periphery, but that's not an EMU route (in the $13.5bn plan) and I presume CBTC is being prioritized to EMU routes to milk the EMU advantages.
 
Last edited:
There appears to be a migration path to including many CBTC features in ETCS including moving blocks, though it is not a perfect overlap. (CrossRail installs both systems due to this). They already will have many more moving block systems than we do by the time we begin constrction....
Indeed, just reading about that now:
CBTC Standardization: Mixed Operation on Shared Lines in accordance with ERTMS/ETCS Standards
Apr 09, 2015 vesuvius News 0

Is it possible a CBTC standardization in accordance with ERTMS/ETCS ? Provisions have been made to plan for the migration from CBTC systems, to ETCS Level 3
FB_vs_MB.jpg
moving blocks) to operate.

A couple of years ago an interesting presentation was given by Beatriz Munoz from Invensys (now Siemens) exploring the convergence of CBTC and ERTMS for suburban rail. According to it, the concepts, principles and architectures seem to be totally compatible to allow this to work.

Another good reference to get further details on this topic is this paper, released by UIC in order to give some updates about the possibility of CBTC Standardization and mixed operation on shared lines in accordance with ERTMS/ETCS Standards. [...]
http://www.railwaysignalling.eu/cbt...-lines-in-accordance-with-ertmsetcs-standards
 
(moving order of posts...moving an older post to bottom to try to put things on topic.
Not a repost, this is a full move -- no post of any kind exists in its original location) [...]
Thank you, mdrejhon, for bringing the discussion on-topic again (fittingly placed at the beginning of a new page as reply #76) and I will refrain from adding anything to the little dispute which had erupted between me and Steve and the following discussion between you and TOareaFan.

They have a system more advanced than North America already, European Train Control System (ETCS), with its various Levels of functionality (Level 1, Level 2, etc) so a little less urgent for them than us. [...]
Prior to ECTS, national systems like the Linienzugbeeinflussung [literally: linear train influencing] in Germany existed in virtually every European country with train operations of speeds in excess of 160 km/h, where in-cab signalling and moving blocks (of lengths depending on the speed of the chasing train - the so-called breaking distance rises exponentially, for instance 160 km/h=1,200 m, 200 km/h=2,000 m, 300 km/h=9,600 m, 330 km/h=13,300 m in the case of LZB) replace stationary signals and continue to exist as ETCS has so far been installed only on very few HSR lines...
 
Last edited:
as ETCS has so far been installed only on very few HSR lines...
Dowling has a point in asking (gist) "How many mainlines have it installed?" Not that many, but the question 'misses the train'. It's barreling down the track, it's *imminent* and it has to be. There's very little choice if we want to move rail into this century. Already it's been dragged out for far too long. LIRR was supposed to install it decades back. Cutbacks took care of that (NYC's bankruptcy didn't help) and a lot of US roads are complaining about the cost of PTC. It almost seems like the separation of freight and passenger is deemed inevitable. CBTC (or a form of it) is looking more like the mandate to make any worthwhile passenger advancement happen.

It's a bit of an odd fate, but perhaps not so surprising that North Am should be so much further behind than Europe on this. Freight is proportionately much heavier, and rail is predominantly freight, the complete opposite of Europe (and much of the developed world) where passenger rail rules.

That alone is the largest factor of VIA HFR working: dedicated track. Unfortunately, mandating CBTC (or the Int'l upgrade of it) for freight isn't going to work. So let's concentrate on its application to passenger and passenger only track.
 
Last edited:
FTFY, and it does not exclude yourself (nor stevetoronto and others).

You were the only one that said they have to choose between snide remarks/sarcasm...adding "from everyone" now seems rather self serving...but it does get you on a very exclusive list of people (actually you would be the only one on it)

No other comment in this unusually far-higher-than-usual noise-to-signal page of this thread.

Make any comments you like now.....that exclusive list you are on means I won't see it anyway. ;)
 
Very interesting paper here:
[...]
2.2
Background
The aim of this project is to establish if enhanced TPWS is a viable fall-back option to
permit Crossrail Paddington-Heathrow services using class 345 trains to replace the
existing Heathrow Connect class 360 services if ETCS cannot be commissioned between
Paddington Station and Heathrow Tunnel Junction by April 2017. To find out, a TPWS
effectiveness study has been carried out to identify those signals which would need TPWS
modifications and to identify those signals whic
h would need initial fitment to achieve similar
effectiveness to that provided by GW-ATP
. This study will evaluate each signal between
0MP and 12MP for fitment and apply TSS and OSS(s) for optimal effectiveness to mimic
ATP functionality.
This effectiveness study must help to establish the following:
x
How safe is the enhanced TPWS option compared to existing?
x
Does this option result in a net reduction in risk between 0-12MP? To achieve a net
reduction, the study will focus on improving TPWS effectiveness for all non-ATP
fitted trains.[...]
http://orr.gov.uk/__data/assets/pdf...tcs-plan-b-study-enhanced-tpws-2015-07-18.pdf

Abstract:

In order to support the high-capacity cross-London service to be introduced in 2018, new signalling systems, including European Train Control System (ETCS) Level 2 and Automatic Train Operation (ATO), are being progressively commissioned. This comes along with the redevelopment of London Bridge station, which is well underway as part of the Thameslink Programme. [...]
https://trid.trb.org/view/2015/C/1372272

Abstract:

The Institute of Railway Signal Engineers (IRSE)'s International Technical Committee has been examining the choice between metro and main line train control technologies, as it is one that promoters and operations of cross-city rail links must make. Factors influencing current projects, such as the operating pattern and the interaction with other train services, play an important role in the decision making. This article takes a look at projects in London (London Thameslink and London Crossrail), Madrid (Madrid suburban), Istanbul (Istanbul Marmaray), and Paris (Paris RER Line E) to see what they have chosen - either European Train Control System (ECTS) or Communications Based Train Control (CBTC). [...]
https://trid.trb.org/view.aspx?id=1249603

Clearly, this is the future. Best we get in front of it before we get run over. I'm sure staff at Metrolinx and VIA have been watching this closely, MD has posted many references from Metrolinx discussing this as forthcoming, and I'm sure Urban Sky has heard and participated in a number of conversations on the matter.

The Caisse proposal for Montreal will prove very interesting in pushing this along. The SRT line already uses a version of this, as does at least one Vancouver line. This can multiply the effectiveness of single track as well as twinned, at a relatively very low cost, and a huge improvement in safety all around.
 
Last edited:
Make any comments you like now.....that exclusive list you are on means I won't see it anyway. ;)
Thank you -- much more decorum and cordiality returns as a result.
Moving on:


It almost seems like the separation of freight and passenger is deemed inevitable. CBTC (or a form of it) is looking more like the mandate to make any worthwhile passenger advancement happen.
Some information of freight contention issues are in RER Business Case Appendix A.

Let's cross-reference the EMU routes with the known freight considerations;
It may kind of determine where they are able to first deploy CBTC on GO's network.
(Image/media filled threads are so much fun, so why not?)

Lakeshore West
....Electric Locos
upload_2016-4-25_21-55-11.png

upload_2016-4-25_21-55-29.png


Milton

....Diesel Locos
upload_2016-4-25_21-55-58.png


Kitchener

....EMU frequent to Bramalea, Diesel to Kitchener
upload_2016-4-25_21-57-23.png


Barrie

....EMU frequent to Aurora, Electric Locos hourly to Allandale
upload_2016-4-25_21-58-6.png


Richmond Hill

....Diesel Locos
upload_2016-4-25_21-58-25.png


Stoufville
....EMU frequent to Unionville, EMU hourly to MtJoy
upload_2016-4-25_21-59-16.png


Lakeshore East

....Electric Locos
upload_2016-4-25_21-59-43.png


Pattern observed:

- Bramalea/Aurora/Pearson/Unionville are the frequent EMU routes
- The candidates of the most likely first CBTC deployment, are probably the frequent EMU sections where short headways would occur and warrants CBTC.
- These sections seem to have reduced freight contention issues relative to the other segments.
- For these, there are mentioned only general freight deliveries to customers, which Metrolinx claims can be limited to nighttime.

P.S. Credit where credit due to the site operators: UrbanToronto actually lets me Ctrl+V (PC) or Command+V (Mac) images to paste images directly from clipboard, without uploading image files. As long as I'm using the enhanced editor via "More Options..."
 

Attachments

  • upload_2016-4-25_21-55-11.png
    upload_2016-4-25_21-55-11.png
    71.7 KB · Views: 937
  • upload_2016-4-25_21-55-29.png
    upload_2016-4-25_21-55-29.png
    26.7 KB · Views: 924
  • upload_2016-4-25_21-55-58.png
    upload_2016-4-25_21-55-58.png
    39 KB · Views: 885
  • upload_2016-4-25_21-57-23.png
    upload_2016-4-25_21-57-23.png
    35 KB · Views: 868
  • upload_2016-4-25_21-58-6.png
    upload_2016-4-25_21-58-6.png
    26.4 KB · Views: 845
  • upload_2016-4-25_21-58-25.png
    upload_2016-4-25_21-58-25.png
    50.4 KB · Views: 902
  • upload_2016-4-25_21-59-16.png
    upload_2016-4-25_21-59-16.png
    17.6 KB · Views: 856
  • upload_2016-4-25_21-59-43.png
    upload_2016-4-25_21-59-43.png
    36.2 KB · Views: 864
Last edited:
Some information of freight contention issues are in RER Business Case Appendix A, which I'll paste here for useful reading.

It may kind of dictate where they can first deploy CBTC on GO's network.
I think freight is key. Just realizing how much easier it is for the cases I've posted...not one of them hosts freight! It's a very important part of Desjardins-Siciliano's dialog on "dedicated track", and the obvious of that rings true, but the minutia of *enabling* that is not as obvious. CBTC is not just for safety, it's to make the dance work, long before trains will pass on a single-track, they're being nudged to the obvious speed and timetable to make them pass effortlessly. At some level of frequency, that will not be as easy, but for the headways outside of commuter operation territories, it will make single track work like a charm, and then do the same with commuter rail headways on twin or triple track. The more I delve on this, the more apparent it is that maximum potential of track pathing can't work without it.
 

Wording there is ambiguous. Do they mean "locos equipped with CBTC?" The "wayside signals" might mean sensors. I'll dig on that. The light signals should be inherently immune. They must be talking about the 25kV catenary and arcing, but it's unclear.
 

Back
Top