PVC King wrote:
"loop line bottle-neck" you are kidding!!!
The existing position is three directions into 2 hence the bottleneck from an equation of 1.5:1; DU will be grade seperated and have 4 directions into two routes i.e. 1:1 which eliminates the bottleneck.
You probably mean two routes onto two sets of rail lines which would be 1:1
My complaint here is not about the current position but the position that will pertain if DU goes ahead which will cost me approx. an extra 1 hour travel daily.
You ideas about the "loop line bottle-neck" is crazy. Let me explain.
The current DART problems are (1)gaps and (2)overcrowding.
(1) Gaps in the current DART service are mostly due to lack of four-tracking.
(2) Overcrowding happens due to the platforms filling up while we wait 20 minutes (gaps) for a mainline train to pass.
This was the case before the Maynooth line began to share the loop line and has not significantly changed as the Maynooth line quite often utilises the gaps in DART.
The loop line aleviation by DU will speed up trains by a miserable few minutes and this is almost neglible compared to the delays due to lack of four-tracking. Even if your ratio was 1:10 this would pertain. So please, no more about ratios.
The DU if it goes ahead it will not aleviate (1) or (2) above. Worse still it will add (as the RO stands) over an hour to my journey time (daily) due to the appaling location of Pearse Underground, and this will be the case for the majority of current DART users.
This is an Architecture site and I really would like to see a discussion on Pearse Underground design, by the Architects in here.
I think the design is appalling.