Quote:
Originally Posted by VIce
If the two lines were to share the tunnel, capacity would only increase marginally. Very, very slightly. Right now the interlined portion the CTrain network is headway limited during rush hour, at the manufacturer's specified 120s: no additional trains can be put on 7th ave. You grade separate them, put them in three platform stations, you get some boost in capacity, but you're back to capacity problems in a few years. That turns a multi-billion dollar investment into a band-aid.
Removing the interlining completely allows both lines to essentially double their carrying capacity - room to grow for years. Transfer stations would likely be through City Hall or the largest mall in downtown - a 100m indoor transfer through a pretty nice space, all-round. The 7th ave portal to the south line is due to stay open, allowing some trains to transfer from the Red to the Blue lines. Removing the interlining has downsides, but its really the only option that makes sense.
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I have always been confused with interlining any routes.
I know it is a cost savings measure. However, those costs are now costs, and tomorrow's costs are only going to be higher.
The reality is that when a line reaches capacity at the interlining, then, unfortunately, they cannot increase capacity on each leg if that is at current capacity and still could have more trains per hour added to move even more people.
The lines should cross, and if CT does it right, it would cross twice. Both of those stations would be the busiest.
The north sections should take 8th Ave, while the South and West take the 7th Ave.
7th/9th, and 7th/3rd would be the 2 stations that they would most likely meet near.