Hornsby Junction Remodelling

 
  Festivus Station Master

Location: Sydney, Australia
Has anyone seen any details on what alignments are being changed as part of this project?

https://www.transport.nsw.gov.au/projects/hornsby-junction
The project website has no information about the actual railway changes though thats not surprising.

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  awsgc24 Minister for Railways

Location: Sydney
Has anyone seen any details on what alignments are being changed as part of this project?

https://www.transport.nsw.gov.au/projects/hornsby-junction
The project website has no information about the actual railway changes though thats not surprising.
Festivus

Six months ago, there was a table on the Concourse with a large plan of the railway tracks between Hornsby Platforms and Bridge St showing the proposed altered tracks.

Existing crossovers with their diamond slips connecting Platforms 1 & 2 to the Down and Up Mains would be replaced by ladder crossovers further north. The Down ladder would be 100m northwards, while the Up ladder, replacing the Up Refuge Loop and No. 1 Up Siding would stretch say 500m northwards.

Between the Up and Down Ladders there would be a turnback siding and footpath, located between the Up and Down Shores like Gordon, Lindfield, Kingsgrove, North Sydney, etc.

The single ladder with some diamond slips from P3 and P4 to the Inwards and Outwards Carsheds road would also be replaced by another ladder crossover.

By relocating the Down Shore to Down Main ladder say 100m from the platform, instead of 1m, the speed restrictive (8km/h) can be removed, allowing most if not all Down Trains to arrive at the speed of the 200m radius curve, namely 40km/h.

The new Shore turnback, allows most trains to arrive in P2 and return to the city in P1, providing more consistent platform usage. This is a bit like the E-C turnback at Chatswood (arrive P2 - siding & walkway - depart P3)

As described in another post, signals between Wahroonga and Hornsby are also being altered, for as yet unclear reasons. The fate of the very slow 8km/h scissors crossovers just south of P1 & P2 is unclear. See: https://www.railpage.com.au/f-t11382536.htm
  Transtopic Train Controller

Has any consideration been given to accommodating a future Northern Line Up Suburban/Relief track as part of quadruplication to Epping?  It's hard to see how this would fit in with the current proposal.
  awsgc24 Minister for Railways

Location: Sydney
Has any consideration been given to accommodating a future Northern Line Up Suburban/Relief track as part of quadruplication to Epping?  It's hard to see how this would fit in with the current proposal.
Transtopic
The terrain between Epping and Hornsby is fairly difficult with large cuttings and embankments, and numerous bridges. The car park at Thornliegh is in the way of an extended Down Relief and would need to be part demolished.

At Epping, should the dive connecting the Main North with the Epping Chatswood be made redundant after opening of Epping-Chatswood Metro, then there would probably be room to build a fourth platform on the surface. The North Turnback siding may be in the way.

At Hornsby, an extended Down Relief would link up with Platform 5. Extension of this line through Asquith would be problematic as brand new car parking and bridges are in the way.

At Hornsby, any extra Up Relief would need to be underground, which would be expensive.
  AndyV Station Master

It looks like the major shutdown around Hornsby will be the first 2 weeks on January.

From Friday 29 December until Sunday 14 January:
  1. Buses replace T1 North Shore Line trains between Berowra and Gordon.
  2. During off-peak periods, buses replace:
    - T1 Northern Line trains between Hornsby and Epping.
    - Central Coast & Newcastle Line trains between Berowra, Epping and the City.
  gordon_s1942 Deputy Commissioner

Location: Central Tablelands of NSW
Something that may not be immediately noticeable unless you can compare the current layout with the proposed one is by moving the track or other structures may alter the view ability of any signals in the affected area.
It wouldnt do to have a signal hidden behind a pylon or one that appears to be for line but is actually on another?

I saw this happen one time in a regional Town where a new street light was installed and its light was now directly behind a lower quadrant and was strong enough to illuminate the shade not covered by the lamp so both colours were seen at once.

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