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DART+ (DART Expansion)

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Comments

  • Registered Users, Registered Users 2 Posts: 9,815 ✭✭✭cgcsb


    Not sure if I've ever heard of such a thing, Battery electric, OHLE dual voltage and Deisel all in one unit. Far simpler to commit to electrifying Drogheda-Newry at 25kV and allow for interchange with an NIR diesel service, so the new fleet should just be a dual voltage electric train



  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    If you've seen the war over suggesting an interchange on a regional service (Rosslare), just wait til what would happen if you suggested it on a premium Intercity service.

    Stadler already make battery/mutli-voltage OHLE/diesel units.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    There are a number of train models with similar specs across Europe.

    I suspect the batteries will be relatively small, compared to what the DART+ BEMU's are getting. Most likely to just benefit from charging using regenerative braking, so that the train can run on battery in the station, saving on fuel + emissions in and near stations. I wouldn't expect it to be able to travel long or far on those batteries like the DART+ BEMU's will.

    BTW This sort of use of small batteries is becoming quiet normal on new order EMU's and DMU's



  • Registered Users, Registered Users 2 Posts: 3,838 ✭✭✭Beta Ray Bill


    As mentioned by @L1011 Stadler do provide bespoke/modular/configurable setups for trains

    The issue is (I think anyway)

    1: The mid life transition from:
    Diesel ICE / Battery / 1.5 kV DC OHLE
    To:
    25 kV AC OHLE / Battery / 1.5 kV DC OHLE

    2: Limit of 200m for the train plus all the equipment + future equipment.

    The TGV switches from 1.5 kV DC to 25 kV AC on the fly on the way out of Marseille, the equipment to do that has been available for quite some time.

    I think the battery packs to power the traction motors, heat and light the train interior for prolonged periods of time, are the thing no one is willing to take a chance on.

    They should just forget about the battery and electrify the entire line, just get it done with. Then that makes choosing trains much easier.

    Personally as I see it, the only loco fit for the Job is the EURO9000, but it's fricken big, and probably very expensive and I don't think Irish Rail want push pull setup like the current enterprise

    Bare in mind that the existing enterprise Diesel loco requires a van to power the passenger cars

    Also will DART+ be 1.5 kV DC or 25 kV AC? would make sense to do 25kV AC with the new trains able to switch power systems




  • Registered Users, Registered Users 2 Posts: 9,815 ✭✭✭cgcsb


    The British government aren't going to build electrified railways in NI though, they haven't even built a significant stretch of road there in a few decades.



  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    A4 and A6 dualling would be significant even by our standards.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    DART+ will be 1.5 kV DC, the longer distance intercity lines are proposed to be 25 kV AC.

    Stadler are a great flexible option, but as you say their configuration might be an issue for 200m spec.

    However they aren't the only option. There are some more traditional looking tri-mode options:

    Already entered services it Italy:

    https://www.railway-technology.com/news/hitachi-rail-blues-train-service/

    CAF in London are doing a 10 tri-mode train order for LNER, which would be a similar size order as the Enterprise:

    https://www.railway-technology.com/news/caf-to-deliver-ten-tri-mode-trains-for-lner/



  • Registered Users, Registered Users 2 Posts: 3,838 ✭✭✭Beta Ray Bill


    True, but one would hope that if they saw us building it then they'd get the finger out and get the investment from "somewhere".

    It should also be noted that a missing link that really should have been included in DART+ is the DART underground (Please don't go mental…. you know who you are :) )
    Right now, it's impossible to get a train from Belfast to Cork. You have to get off the train, get a Luas, and get on a different train, and the times don't even match up. DART underground would have "correctly" linked up the 3 biggest cities on the Island by rail.



  • Registered Users, Registered Users 2 Posts: 13,975 ✭✭✭✭Zebra3


    Who’s looking to get a train from Cork to Belfast?



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  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    You called :)

    No one in Cork cares about getting the train to Belfast! The numbers who make that trip are tiny and it wouldn't justify the cost of a tunnel.

    If there was any demand for it, then one of the airlines would operate a Cork Airport to Belfast route. But there doesn't even seem to be enough demand for Aer Lingus to operate ATR's between the two airports despite their presence in both!

    Now you could possibly improve the connection between the Belfast train and Cork train by routing say every second Cork train (at future 30 minutes frequency) through PPT to the Connolly/Docklands area. You can then have an easy change between the two. Though the real benefit of this would be a stop at Glasnevin to change to Metrolink for the airport, plus the docklands area as a suggestion. Both of those would generate much more traffic then going onto Belfast.

    Also are we really mixing intercity trains into the DART Underground! Haven't we already made that mistake, mixing different types of services like that!



  • Registered Users, Registered Users 2 Posts: 3,838 ✭✭✭Beta Ray Bill


    @bk

    Also are we really mixing intercity trains into the DART Underground! Haven't we already made that mistake, mixing different types of services like that!

    Just 4 track it! That's what winners do!

    No one is looking for that service right now cause it doesn't exist!

    350-400km is optimal distance for HSR. If it existed, people would use it. (M1 and M7/M8 are the busiest motorways in the country).

    DART underground would allow trains to go straight through (regardless of the route underground)



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    So make it far more expensive and make the cost benefit analysis of DART Underground even worse!

    As I said, if the demand was there Aer Lingus would put a ATR on it or Ryanair, but they haven't. Nor has any of the intercity coach companies despite the ease which they could due to licensing and the international border. That all says to me that there is little or no demand.

    Also, we aren't getting HSR, the AIRR says higher speed rail. 200km/h, but I've heard talk of even 185km/h, which aren't HSR.



  • Registered Users, Registered Users 2 Posts: 1,894 ✭✭✭KrisW1001


    For Inter-City services, there isn't a need for an underground through the city, just a rail connection of any kind (not shared with DART) between the three major trunk lines entering Dublin.

    In the original DART Underground world, Phoenix Park Tunnel was left out of the DART plans, and could have been used to allow Inter-City Belfast services from Heuston to the Northern line (with a bit of reversing at Heuston).

    Now, PPT has been included in the DART network, there's no other link available for Inter-City services.

    My concern about any mainline tunnel is that any intermediate station would inevitably become a de facto "Dublin Central", and there's absolutely no chance of building a station underground that would be big enough to fill that role.

    A radical idea would be to make Heuston the only mainline station for Dublin, create a new "big chord" (surface or tunnelled) from southwest to north to connect the services on the northern and western line that used to use Connolly (which is a serious bottleneck right now) into Heuston instead. Connolly and the city Loop line would then become DART only. This would need a better DART connection into Heuston than the planned "Heuston West", but the pattern of having separate mainline and "city train" systems is a one that works well in other cities.

    This would be really expensive, of course, but removing the need to connect Heuston and Connolly might make it a little more feasible.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    Well if you build DART Underground, you could move the DART's out of the PPT and into the tunnel, thus freeing up space for the intercity trains through the PPT to Connolly area.

    The issue with making Heuston the only intercity station, is that the Connolly/Docklands area is likely a more attractive destination for most intercity passengers then Heuston. Certainly I wouldn't see folks on the Enterprise being happy with a longer route over to Heuston rather straight into Connolly.

    Of course work would be needed on the Connolly/Docklands area to make it possible, but this are the advantageous I'd see:

    • Cork, etc. passengers would have just one stop change at Glasnevin to Metrolink (to Airport/Stephens Green), rather then two changes (Inetrcity → DART → Metrolink).
    • Connolly/Docklands is closer to the city, a more attractive destination then Heuston (more people live and work in this area) and is better connected to North/South DART lines for onward journeys.
    • No change for Belfast Eneterprise passengers, doesn't add to their journey time.
    • Could make an easy interchange between Cork and Belfast train, hell if you wanted you could even merge them into one service and have the Cork train carry onto Belfast!

    Of course this would all be on the assumption that you are building DART Underground anyway, if not, then maybe you'd look at your option. Though even with DART via PPT, I do wonder if you could still route one intercity train per hour through the PPT?



  • Registered Users Posts: 1,054 ✭✭✭riddlinrussell


    Dart Underground is still technically on the agenda for Dart+ though isn't it? Just renamed to Dart+ Tunnel (and likely being long fingered to the 2040s)



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  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    It is mentioned in the Greater Dublin Area Transport Strategy 2042, but in a fairly wishy washy manner. You are correct that they call it the DART+ Tunnel now, but I don't think it is actually part of the DART+ project.

    For me, the whole concept of DU was thrown into disarray by the AIRR, that instead talks about a railway tunnel under Dublin and including Intercity services using it!

    I felt the vision for DU was clear, a tunnel for DARTs under the city that would help resolve the issues of the loop line bridge.

    Now I really don't know what they are planning or what the vision/goal really is.



  • Registered Users Posts: 1,343 ✭✭✭Consonata


    I think Irish Rail want to move all intercities to Heuston and have Dart serve the others. I don't love it but I'm guessing that's why they're floating the Maynooth →Hazelhatch railway, so Sligo rail can terminate there.

    I'm unclear why IÉ aren't using North Wall at all. Seems like it could serve a similar if not better role than what Heuston has to do currently.



  • Registered Users Posts: 548 ✭✭✭Rugbyf565


    is the dart expanding to Wicklow town?



  • Registered Users Posts: 548 ✭✭✭Rugbyf565


    The biggest failure of the ministry for transport the last 30 years is the failure to properly connect Dublin with Meath, Kildare and Monaghan. I think you need a minister who’s not afraid to be ruthless about public transport links, with a heads will roll type approach. Leo Varadkar set this country back to the dark ages with his national roads plan, that’s one the biggest reasons in my book that he’s a grade A scumbag.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    There appear to be studying the possibility, but not confirmed/signed off yet.

    The idea would be for the DART's to run on battery power from Greystones to Wicklow Town, there would be no overhead cables.

    Yes, the AIRR mentions this. The idea is that DART trains would slow the Sligo train down and limit frequency. So by routing to Heuston, it can keep the speed up and not interfere with DART West trains and also possibly increase the frequency of the Sligo service. Part of this seems to be planning for a Navan service.

    Having said that, I don't see anything about connecting the Western lines with the Northern line are taking the Enterprise out of Connolly. I don't think they have any plans for that and they certainly wouldn't be looking to quad track Connolly if there were.



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  • Registered Users Posts: 1,247 ✭✭✭gjim


    I can remember what the country was like in terms of transport infrastructure in 1994 - you had to live within 30km of Dublin to experience the novelty of driving on a motorway. Making it a priority to connect Monaghan to Dublin by rail back then would have been truly bizarre. Even now making that a priority would be daft.



  • Registered Users, Registered Users 2 Posts: 29,092 ✭✭✭✭blanch152


    There are probably more buses from Cork to London or Paris than from Cork to Belfast.



  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    Eurolines southern services have not resumed. They actually ended pre-pandemic.



  • Moderators, Science, Health & Environment Moderators Posts: 5,198 Mod ✭✭✭✭spacetweek


    The national roads plan is the greatest thing to happen in this country in decades.

    Regarding a future Navan service, I suppose it will terminate in Spencer Dock, right? Not Connolly?



  • Registered Users, Registered Users 2 Posts: 1,894 ✭✭✭KrisW1001


    The roads plan was great. There was also a rail plan, but a lot of that was invisible.. In 1994, continuously-welded track was only just being installed on the Irish network: you still had the clack-clack of the train passing gaps in track. New trains arrived in 2004 (carriages for Cirk Dublin) and then by 2007, we had replaced all the old carriages with brand new ones, or DMUs.

    Where we really missed out with rail was in the Cohesion Find payments in the mid-1990s.. at a time when the EU would pay 85% of project costs, we should have looked into starting the electrification of the rail nerwork, but I understand why roads came first: as bad as rail was, the roads were much worse.



  • Registered Users, Registered Users 2 Posts: 13,975 ✭✭✭✭Zebra3


    Rail inside Dublin tho is still lagging far behind where it should be and this is causing a big hit on quality of life.



  • Registered Users, Registered Users 2 Posts: 7,702 ✭✭✭prunudo


    it's a double edged sword, its really popular and needs investment for both expansion and improvement but because it is so busy, they are afraid of the backlash, due to closures and interruption to service that engineering works will bring.



  • Registered Users Posts: 420 ✭✭Ireland trains


    If planning for Dart West was granted tomorrow, how long would it realistically be until construction starts. Will the new depot be finished before the new fleet arrive.

    Is Dart North supposed to be lodged for planning soon, consultation began over 2 years ago it seems like an awful long wait for a relatively straightforward project.



  • Registered Users, Registered Users 2 Posts: 11,036 ✭✭✭✭tom1ie


    <snip> because a load of roads got built?

    Ok.

    Mod Edit - Original post was edited for using unacceptable language.

    Post edited by Sam Russell on


  • Moderators, Sports Moderators Posts: 12,361 Mod ✭✭✭✭Cookiemunster


    The 'national roads plan' as you call it was conceived in the 90s by FF and mostly built by them in the 00s. Leo Varadker was first elected to the Dail in 2007 and didn't become a member of government until 2011. The roads had nothing to do with him.

    Post edited by Sam Russell on


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  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    It is possible they mean the cancellation of the N20, GCRR etc under Varadkar; which was primarily because the decision of the Troika was that our ongoing funding was dependent on doing as little capex as possible.



  • Registered Users, Registered Users 2 Posts: 11,036 ✭✭✭✭tom1ie




  • Registered Users, Registered Users 2 Posts: 2,769 ✭✭✭Citizen  Six


    No, the trains will be here, and in testing, before the depot is built.



  • Registered Users, Registered Users 2 Posts: 19,037 ✭✭✭✭murphaph


    I'm a big rail fan but nobody could seriously argue that the national roads programme was not badly needed. On road safety grounds alone something radical had to be done.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    Yes, the one complaint I would have is that we overly focused on roads during that period and too little on public transport, we should have taken a more balanced approach.

    For instance built the motorway network over 20 years instead of 10 and do more PT. For instance the last extension to the DART network was to Malahide in 2000. Then we just stopped!

    Instead we should have continued to build out what we now call DART+ during the early 2000's. Extended electrification to Drogheda, start working towards the western lines, etc. A big missed opportunity.



  • Registered Users Posts: 1,247 ✭✭✭gjim


    On the other hand, there was some value to focussing on a single transport issue at a time. It's more efficient in terms of resources. By setting up a continuous pipeline of work, a relatively stable team of specialist engineers, managers, etc. can be assembled just once and then kept busy through a series of projects over years. With experience, the efficiency of such a team grows considerably. Contractors and suppliers stick around and themselves improve with experience. PIt certainly felt like the rate of delivery in terms of km of new motorway grew to a phenomenal rate after what felt like a slow start in that 1990s road program.

    I don't see any reason why T42 shouldn't pan out similarly. In terms of scale, T42 is, by multiple factors, is the biggest and most ambitious program for public transport expansion since the foundation of the state. The state has never attempted anything of this scale. There's bound to be inefficiencies in the process exposed during the first iteration. Many are being addressed as we go - expansion and firings at the top for ABP, setting up a dedicate court for planning in the Four Courts, planning law reform, etc. - all this (and more to come I'm sure) will hugely benefit future PT projects.

    I remember when the Irish road network constituted its own genre of jokes. People had no problem talking like 1930s eugenicists or 19th century racist imperialists when discussing it - "Irish people are inately incapabable of managing infrastructure" would be typical. With regards to roads, that has now stopped - the motorway network (besides a missing link - the M20) is now impressive and the jokes about Irish roads have gone away. But the same mindset is apparent with respect to T42 - cynicism and fatalism to a ridiculous degree.



  • Registered Users Posts: 266 ✭✭Ronald Binge Redux


    The cynicism is well founded. The motorways were rammed through quickly. Rail improvements aren't, and the notion of turning existing rail alignments into cycleways has only abated lately.



  • Moderators, Motoring & Transport Moderators, Technology & Internet Moderators Posts: 23,201 Mod ✭✭✭✭bk


    On the other hand, there was some value to focussing on a single transport issue at a time. It's more efficient in terms of resources. By setting up a continuous pipeline of work, a relatively stable team of specialist engineers, managers, etc. can be assembled just once and then kept busy through a series of projects over years. With experience, the efficiency of such a team grows considerably. Contractors and suppliers stick around and themselves improve with experience. PIt certainly felt like the rate of delivery in terms of km of new motorway grew to a phenomenal rate after what felt like a slow start in that 1990s road program

    But that is the exact same point I’m making about DART. We should have never stopped working on it and extending it. We should have kept the experienced team working on it.

    DART opened in 1984, the extensions to Malahide and Greystones didn’t happen until 2000 and then nothing since then!

    Very stop/start, at the least the extension to Drogheda should have continued in the early 2000’s and planning for the Western lines. Though ideally even better if that work had happened back in 1984.

    I agree with you and keeping the motorways rolling, but it was a very aggressive timeline, doing the same work over say 15 years, likely wouldn’t have had any impact on keeping the teams and experience around, while freeing up more money to work on DART instead.

    I have the same worry about LUAS, not much happening there now. I know those folks are most likely focused on Metrolink, but I do worry we will lose some skills and momentum related to Luas.

    At least Irish Rail seems to have learned this lesson and now have a pipeline of projects around the country.



  • Registered Users, Registered Users 2 Posts: 2,769 ✭✭✭Citizen  Six


    Wasn’t there a German team working on the extensions? And everything was ran with good timing and precision?



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  • Registered Users, Registered Users 2 Posts: 13,975 ✭✭✭✭Zebra3


    Wasn’t the early years of the motorway expansion riddled with corruption?



  • Registered Users, Registered Users 2 Posts: 14,658 ✭✭✭✭Thelonious Monk


    don't know if this is the right thread but these look pretty swanky



  • Registered Users, Registered Users 2 Posts: 15,224 ✭✭✭✭loyatemu


    is 2025 a bit optimistic? when are deliveries going to start?



  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    Based on how long it took the CRR to allow the 22000 centre cars in, if they were delivered tomorrow I'd not be certain of 2026…



  • Registered Users, Registered Users 2 Posts: 1,958 ✭✭✭Economics101


    THe UK Rail Industry Association has published a paper on electrification. One of the big takeaways is that UK electrification has been a series of feasts and famines, with huge problems as skills are dissipated between big projscts such as WCML, ECLM and GWR electrification, whereas Germany has a steady flow of relatively modest projects and a steady employment for the appropriate skills. (I don't have the link. The RAI is an industrial lobby group, but they appear to speak sense on this.) The lessons for Irish Rail are obvious. Have a pipeline of projects and implement them in sequence depending on funding, etc.

    However, we have the Irish planning system.😎 This will no doubt stymie almost anything.



  • Registered Users, Registered Users 2 Posts: 2,769 ✭✭✭Citizen  Six


    Trains expected to start arriving at the end of the year. Drivers already being trained up for them, big work going on in Inchicore at the moment for facilities to commission them, and paths for testing being worked out.



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  • Registered Users Posts: 46 Crakepottle?


    Anyone know when the Dart South West is getting underway ?



  • Moderators, Science, Health & Environment Moderators Posts: 20,015 Mod ✭✭✭✭Sam Russell


    Would it be possible for the Gov to exempt O/H electrification from planning? Afterall, what is gained by planning?

    While they are at it, dualling an existing single track line could also be made exempt.



  • Registered Users, Registered Users 2 Posts: 1,894 ✭✭✭KrisW1001


    OHLE involves construction of substations and supporting pylons, it creates a permanent visual change, and it reduces the permitted road vehicle height at level crossings. Any one of those would require planning.



  • Moderators, Science, Health & Environment Moderators Posts: 20,015 Mod ✭✭✭✭Sam Russell


    There is already a limit to vehicle height, but bridge strikes still occur.

    Not all pylons require planning.

    Surely, just consider the substations that ESB use - do they need PP for each one? PP could be an issue for the LA, not ABP.



  • Registered Users, Registered Users 2 Posts: 70,278 ✭✭✭✭L1011


    Substations need permission; and most are a lot smaller than than what OHLE needs.



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