Showing posts with label Sydney Harbour. Show all posts
Showing posts with label Sydney Harbour. Show all posts

Thursday, July 5, 2012

CBD Enhancement dropped!

Unfortunately, it seems from recent documentation that the previously planned CBD enhancement from Eveleigh to Wynyard and beyond is to not proceed.  This is a decision which means that there will not be much improvement in Cityrail for decades, particularly for the Western and Northern Lines.

Giving the Western Line its own path through the CBD would be best practice.  It's the busiest line on the network, and busier than the North Shore line (counting the upper Northern Line), Illawarra Line and Eastern Suburbs Line all of which have their own path through the CBD.  So why not separate the network out further which will help with allowing more and stricter sectorisation?  That would get these passengers out of the current Town Hall and Wynyard significantly easing platform congestion and the new platforms should be able to be built wider than the existing platforms. Alternatively with what is known as bifurcation which means that there would be 4 additional platforms per station to reduce/remove dwell time in the CBD from being the capacity restriction.  This would leave Parramatta dwell times as the limitation.

The above linked documentation mentions some restrictions which are either soon to be removed or can be.  Numbers 3, 4 and 9 can be easily removed, they just choose not to.  In the case of number 9 which the document details removing this does mean trains need to take a slower path, however, this limitation is solved by the CBD enhancement (formerly called the Western Express) as described above, as is number 7.

Such an unceremonious dumping deserves an explanation, however the linked document above seems to be an attempt to deflect the criticism rather than explain it.  It does not refer at all to the plan to increase CBD capacity along the "Metro West" alignment as originally planned, but an alternative plan which had never been publicly proposed involving a Cityrail expansion along the "Metro Pitt" alignment, which would not help the Western Line.

I just wonder if they are pushing some agenda, and if so then what?  Perhaps it is just to be different from the Keneally government's sensible Western Express plan.

Saturday, June 23, 2012

Cityrail timetable proposals in recent news - Part 3

An official video shows that the second phase of this plan involves:
  1. A new harbour crossing, connecting to the Metro Pitt alignment.
  2. Metro connecting to the Bankstown line and part of the Illawarra line.
  3. Removal of Campbelltown via Sydenham. 
  4. No increased capacity for the Western, South or North lines beyond what is possible now.
  5. Some Western line trains to take the slower path around the city circle.
Almost every aspect of this plan is daft.
  1. Sending metro trains down the Illawarra line to Hurstville means that some Railcorp passengers will be taken away from the Eastern Suburbs Railway, to be replaced by no one.
  2. Overtaking manoeuvres will no longer be possible.  All trains will likely need to run with the same stopping pattern, presumably Redfern, Sydenham, Wolli Creek, Rockdale, Kogarah, Hurstville and then all stations to Waterfall or Cronulla.  A capacity reducing skip stop is also possible.  It will be exceedingly difficult to operate the South Coast trains with only one pair of tracks the whole distance.
  3. Removing the Bankstown line from the city circle removes what is the only swing player between the Town Hall and Museum legs.  This will not be helpful.
  4. Removing Campbelltown via Sydenham will result in slower journeys and be less competitive with road transport, particularly with the planned M5 widening.  I do not think that additional frequency through the Airport line adds nearly as much value.
  5. Additional Western line paths into the city circle requires them to either add a conflicting move at Macdonaldtown or traverse Strathfield platforms 7 and 8.  The latter will increase journey times, the former would reduce reliability.  There is a good reason why every inquiry has recommended a new CBD path, to prevent such trades from being made.  This new path is being done in such a way as most of the benefit which should be realised is completely wasted.  You might as well run in to the Wynyard platform 1 and 2 dead end as the trams used to.
If a crossing under the harbour is to be done, it really should increase capacity for the other side of Central.  This plan does not achieve that at all.  It wastes some of the presently available capacity.

I hope that we hear nothing further about this plan.

Sunday, June 3, 2012

Second rail harbour crossing back on the agenda

The Sydney Morning Herald has again reported that a new harbour crossing is back on the agenda.  The SMH reports that the advice to Gladys Berejiklian is this is needed for natural growth and the NWRL.  Well, sort of.  It is only needed in this or the next decade because of the NWRL.

It was always disingenuous and/or dishonest to suggest that the NWRL without a second harbour crossing was a reasonable policy, but it was a winning strategy at the 2011 NSW election.  In my opinion Infrastructure Australia was absolutely correct to rebuff the current NWRL plan.

Some people have suggested that signalling improvements could delay the need for this.  Well that may be, but it would not come cheap and nor would it remove some remaining conflicting moves particularly at Macdonaldtown.  Signalling improvements also would not help to remove the south line from the need to pass the platform faces between Summer Hill and Macdonaldtown - these lines are slower than the centre pair of tracks, which are slower than the northern pair of tracks.  There needs to be a study on the bang for buck of this particular option.  Personally, I believe it will defer the need for track amplifications only slightly so should not proceed.

What about single deck?  Well while you might have more trains, the number of seats on the line would be reduced for sure.  It is unclear whether or not the number of standing spaces would be increased by enough to compensate, but I think it is fair to say that reduced seating is against what Sydneysiders want.  There are similar issues with increasing the number of doors per carriage.

The SMH also reports that the "City Relief Line" is dead.  Well, that's creative politicking right there.  Transport for NSW report that all options feature a "CBD enhancement" which is basically the city relief line by another name.  As for the suggestion the under the harbour line might connect to the Illawarra, that is insane, and a waste of web bandwidth to debunk.