Extending the Luas beyond Red, Green and BXD - see post #14

MJohnston · 13-07-2016 10:41AM

riadach wrote: »

If you check out the alignment maps for the BXD from lower Grafton Street to Eden Quay, you'll see that there are the beginnings of lines which will form part of the future Line F to Lucan.

There are mentions of it in the College Green plans too,

D.L.R. · 13-07-2016 03:14PM

riadach wrote: »

If you check out the alignment maps for the BXD from lower Grafton Street to Eden Quay, you'll see that there are the beginnings of lines which will form part of the future Line F to Lucan.

We're missing an opportunity terminating Line F at College Green. Should be carrying on through to Pearse and Googleland.

Sam Russell · 13-07-2016 05:08PM

newacc2015 wrote: »

IMO the most important area which needs to be connected to the city is UCD. It is insane that a massive university has no proper links to the City. The traffic congestion in the surrounding area is so horrific, that a luas line is needed. The area really needs either an evaluated tram or a metro. An evaluated metro was shelved in Ballymun due to lobbying, I cant imagine how much more vocal residents will be around UCD. A cut and cover Metro is possible with the bypass. But it would cause the area to go to a standstill

Wasn't there a reserved link through St Helen's (now the Radisson) linking UCD down to the Rock Road? That woud make a great spur - either for Dart (or Luas if connecting to the Green Line at Milltown).

jd · 15-07-2016 12:23PM

MJohnston wrote: »

Thanks to moving into a new house, I've been up through Ballymun a lot recently (and come back with a lot of cardboard) and it seems to me that the majority of the Ballymun road would easily accommodate a Luas line using the median and/or one of the existing traffic lanes (this whole road seems rather over engineered imo).

This is where "Optimised" Metro North will be.

marno21 · 17-07-2016 03:42AM

jd wrote: »

This is where "Optimised" Metro North will be.

They are planning on running the Metro North through the median of the R108? Are you serious?

jd · 17-07-2016 12:06PM

marno21 wrote: »

They are planning on running the Metro North through the median of the R108? Are you serious?

Yes, unfortunately.

https://www.nationaltransport.ie/news/new-metro-north-will-best-address-future-transport-needs-in-swords-and-fingal-region-nta-new-line-to-run-underground-in-city-centre-and-to-serve-airport/

fionnsci · 17-07-2016 01:26PM

I don't suppose anyone knows of/has created a map of what Dublin will (i.e. could) look like when (i.e. if) this is all completed? Metro North, Dart Underground, Luas BXD, Luas to Lucan, Red Line extension to Poolbeg, on one map. I'd love to play make believe.

Also, does anyone else find the fact that all the different rail systems will have different names to be a little frustrating? I know it's largely superficial but I can imagine tourists in particular being confused with talk of Luas, Dart and Metro. I wonder would they ever try to bring them all under one brand or two, based on whether it's light rail/heavy.

MJohnston · 17-07-2016 02:31PM

They just need to stop referring to the method of transport, and highlight the destination or the line. Imo there's already scope for rebranding the Red Line to denote the different Saggart/Tallaght services - take a look at the Washington DC Metro for example, where the Yellow Line shares much of its duration with the Green (and then Blue) lines, or the Orange and Silver lines which are essentially the same aside from spurs.

Of course, in an ideal world, the DART and Luas would share naming conventions so tourists could glance and know, but I'd guess that'll never happen.

salmocab · 17-07-2016 05:34PM

jd wrote: »

Yes, unfortunately.

https://www.nationaltransport.ie/news/new-metro-north-will-best-address-future-transport-needs-in-swords-and-fingal-region-nta-new-line-to-run-underground-in-city-centre-and-to-serve-airport/

With the stops that far apart maybe they could have a Luas running beside it to get people to their stop:)

That username is already in use. · 23-07-2016 01:12AM

fionnsci wrote: »

I don't suppose anyone knows of/has created a map of what Dublin will (i.e. could) look like when (i.e. if) this is all completed?

There's this map from Skyscapercity.

https://goo.gl/1pZyNj

http://www.skyscrapercity.com/showthread.php?t=1712381

AngryLips · 07-02-2017 07:13PM

Wasn't the median built with the intention of facilitating a metro line? What's the problem

LeinsterDub · 08-02-2017 10:17AM

AngryLips wrote: »

Wasn't the median built with the intention of facilitating a metro line? What's the problem

Capacity , speed, access and public safety

AngryLips · 08-02-2017 10:20AM

This doesn't seem to be a problem in other cities, or with Luas. Given that it's anticipated as part of the layout, I imagine most of those concerns have been designed out.

LeinsterDub · 08-02-2017 10:27AM

AngryLips wrote: »

This doesn't seem to be a problem in other cities, or with Luas. Given that it's anticipated as part of the layout, I imagine most of those concerns have been designed out.

The Luas isn't a Metro. MN is meant to be closer to the underground in London than a tram.

It was intended to have a 90 second service and 90 meter trains.
A 90 second services means a 90 meter train passing a given point on average every 45 seconds. If we want to run a Luas up the median that's fine but it will have shorter trams, lower speeds, be less frequent and stopping at traffic lights leading to longer journey times

jd · 08-02-2017 11:54AM

AngryLips wrote: »

This doesn't seem to be a problem in other cities, or with Luas. Given that it's anticipated as part of the layout, I imagine most of those concerns have been designed out.

Originally they thought they'd have a segregated elevated metro.
This didn't go down well with the locals so plan was then to tunnel as far as Santry Avenue.
Some old back ground at http://www.irishtimes.com/news/rpa-prefers-central-ballymun-route-for-dublin-s-metro-line-north-1.1039563

AngryLips · 08-02-2017 01:49PM

LeinsterDub wrote: »

The Luas isn't a Metro. MN is meant to be closer to the underground in London than a tram.

It was intended to have a 90 second service and 90 meter trains.

The reality is that there won't be deman for frequencies under 3 minutes per direction any time in the foreseeable future though. Let's not kid ourselves about that.

Dardania · 08-02-2017 02:04PM

AngryLips wrote: »

LeinsterDub wrote: »

The Luas isn't a Metro. MN is meant to be closer to the underground in London than a tram.

It was intended to have a 90 second service and 90 meter trains.

The reality is that there won't be deman for frequencies under 3 minutes per direction any time in the foreseeable future though. Let's not kid ourselves about that.

I was talking with some colleagues lately, what is essence of good engineering. And the consensus was: in designing a system, how the designer matches peak demand to average demand, with a fixed capacity, is a great way to judge the quality of a designer.

Comes up in many fields e.g. at peak load, combustion machines are most efficient, but how efficient are they at part load.
Back on topic - the demand is there, but maybe Dublin Bus will continue to provide some of the capacity also...

lawred2 · 08-02-2017 02:07PM

AngryLips wrote: »

The reality is that there won't be deman for frequencies under 3 minutes per direction any time in the foreseeable future though. Let's not kid ourselves about that.

It's nearly 200 years since discussions began on a London Underground.

I wonder were they thinking about short term demand at that time?

LeinsterDub · 08-02-2017 03:02PM

AngryLips wrote: »

The reality is that there won't be deman for frequencies under 3 minutes per direction any time in the foreseeable future though. Let's not kid ourselves about that.

The reality is if we build it limited to frequencies of 3 minutes that's all we'll get where as if it's built to handle 90 second frequency we don't have to use it initially

AngryLips · 08-02-2017 06:05PM

lawred2 wrote: »

It's nearly 200 years since discussions began on a London Underground.

I wonder were they thinking about short term demand at that time?

I think they got good value out of that 200 years though. Wasn't the Luas built to spec for a 35 year lifespan or something like that? Honestly, underground in Ballymun is underground for the sake of it. There's plenty of examples of metros running at grade along similar routes, Ballymun and Dublin is no special snowflake.

marno21 · 08-02-2017 06:08PM

AngryLips wrote: »

I think they got good value out of that 200 years though. Wasn't the Luas built to spec for a 35 year lifespan or something like that? Honestly, underground in Ballymun is underground for the sake of it. There's plenty of examples of metros running at grade along similar routes, Ballymun and Dublin is no special snowflake.

Underground in Ballymun isn't exclusively about Ballymun. The purpose of this "Metro" is high frequency high capacity running between Dublin City Centre, DCU, Ballymun, the Airport, Swords and greenfield parts of North County Dublin that can be used for housing.

Surface running in Ballymun is the equivilant of the at grade junctions built on the ex N25 in Cork that were fine when it opened but when it got busier they became major chokepoints. If you have 90m metros coming through Ballymun every 90 seconds what'll that do to the roads around Ballymun esp with the likes of Northwood and Ikea around? What'll happen is the high frequency running will be objected to because of the knock on effects.

If this is to be a Metro build it as a Metro. Otherwise call it Luas North and get the **** on with it if that's what they want to do.

LeinsterDub · 08-02-2017 07:30PM

AngryLips wrote: »

I think they got good value out of that 200 years though. Wasn't the Luas built to spec for a 35 year lifespan or something like that? Honestly, underground in Ballymun is underground for the sake of it. There's plenty of examples of metros running at grade along similar routes, Ballymun and Dublin is no special snowflake.

So solve the NTA's problem from them and square the circle . High speed , high frequency while maintaining access and safety

AngryLips · 08-02-2017 09:03PM

marno21 wrote: »

Underground in Ballymun isn't exclusively about Ballymun. The purpose of this "Metro" is high frequency high capacity running between Dublin City Centre, DCU, Ballymun, the Airport, Swords and greenfield parts of North County Dublin that can be used for housing.

Surface running in Ballymun is the equivilant of the at grade junctions built on the ex N25 in Cork that were fine when it opened but when it got busier they became major chokepoints. If you have 90m metros coming through Ballymun every 90 seconds what'll that do to the roads around Ballymun esp with the likes of Northwood and Ikea around? What'll happen is the high frequency running will be objected to because of the knock on effects.

If this is to be a Metro build it as a Metro. Otherwise call it Luas North and get the **** on with it if that's what they want to do.

You're talking about an over-engineered solution for a frequency of service not found outside world mega cities like London, over what will essentially be 3 level crossings covering a 2.5km stretch of north Dublin. The solution has worked successfully in Porto, Athens and other comparable cities yet somehow, Dublin is different. The argument only had credibility from a political standpoint but doesn't hold water from a planning POV.

LeinsterDub · 08-02-2017 09:24PM

AngryLips wrote: »

You're talking about an over-engineered solution for a frequency of service not found outside world mega cities like London, over what will essentially be 3 level crossings covering a 2.5km stretch of north Dublin. The solution has worked successfully in Porto, Athens and other comparable cities yet somehow, Dublin is different. The argument only had credibility from a political standpoint but doesn't hold water from a planning POV.

You claim there is no demand for a frequency below 3 minutes. The luas frequency is between 3-5 minutes and is rammed at peak the new green line trams will be 54 meters long but will only add space for an additional 60 people it's basically maxed out

Idbatterim · 09-02-2017 08:51AM

what are other options? How long is this section we are talking about?

Idbatterim · 09-02-2017 09:21AM

marno21 wrote: »

Underground in Ballymun isn't exclusively about Ballymun. The purpose of this "Metro" is high frequency high capacity running between Dublin City Centre, DCU, Ballymun, the Airport, Swords and greenfield parts of North County Dublin that can be used for housing.

Surface running in Ballymun is the equivilant of the at grade junctions built on the ex N25 in Cork that were fine when it opened but when it got busier they became major chokepoints. If you have 90m metros coming through Ballymun every 90 seconds what'll that do to the roads around Ballymun esp with the likes of Northwood and Ikea around? What'll happen is the high frequency running will be objected to because of the knock on effects.

If this is to be a Metro build it as a Metro. Otherwise call it Luas North and get the **** on with it if that's what they want to do.

the surface running, exacerbates the 60 v 90m trams and platorms though right? as at least with 90m, they dont have to run as frequently, its appearing to me, that the only cost "savings" are going to be gotten from surface / elevated v tunnel. Also in the airport, they mentioned that if great southern hotel chosen for stop, it would involve less tunnel. Just playing devils advocate, if there was en elevated enclosed walkway with travelator, to get you from terminal to this, would it be that bad? people are used to walking large distances in airports...

newacc2015 · 09-02-2017 10:11AM

Idbatterim wrote: »

Also in the airport, they mentioned that if great southern hotel chosen for stop, it would involve less tunnel. Just playing devils advocate, if there was en elevated enclosed walkway with travelator, to get you from terminal to this, would it be that bad? people are used to walking large distances in airports...

In Schoenberg (one of Berlins Airports) it is a good 5-10min walk into the cold to the S-Bahn to the city. You wait on the cold exposed platform for the trains

LeinsterDub · 09-02-2017 10:14AM

Idbatterim wrote: »

if there was en elevated enclosed walkway with travelator, to get you from terminal to this, would it be that bad? people are used to walking large distances in airports...

Would it be so bad? No. Would it be a less than optimal solution to save buttons ? Yes.

spacetweek · 09-02-2017 10:20AM

Can we get back on topic now, which is talking about Luas extensions? Thanks.

Idbatterim · 10-02-2017 05:05PM

new cherrywood town of 30,000 to be served by four existing luas stop. Surely it now makes sense for the council, to have a development plan in place for the extension to bray, so that similar schemes can be routed along its length?

http://www.independent.ie/business/personal-finance/property-mortgages/biggest-ever-development-will-house-30000-35438925.html

Extending the Luas beyond Red, Green and BXD - see post #14

Comments