Welcome back to my ongoing NYTIP series! In the comments section of my post on SAS Phase 2X, commenter mrsman gave some interesting commentary about alternate de-interlining strategies (also see this Reddit thread). It got me thinking about how to handle the Astoria/Broadway and South Brooklyn de-interlining in the absence of a new yard north of Astoria – Ditmars Blvd station. Let’s explore, shall we?
First, let’s recap. For South Brooklyn, de-interlining options include a D/Q swap and a B/N swap. For Astoria and Broadway, de-interlining options include sending all Broadway Express service (N/Q trains) via the Second Avenue Subway and sending all Broadway Local service (R/W) via Astoria. The issue with the latter is yard access – the R would not have direct access to a train yard. I proposed a new yard within the Con Edison property north of Astoria to mitigate this problem and catalyze a potential LaGuardia Airport extension. However, a new yard is a major capital investment. In the absence of said yard, how can we remove the bottleneck in South Brooklyn? The key:
Reroute R trains via Brighton Local to Coney Island.
This gives the R direct access to the Coney Island Yard. In addition, the 44 stops end-to-end from Astoria – Ditmars Blvd to Coney Island is the same number of stops on the current R from Forest Hills to Bay Ridge – 95th Street. Unfortunately, this results in some interlining on the Brighton line. Of course, if you reroute the R this way, how does this affect the proposed South Brooklyn swaps? I will present what I feel are the best options under this scenario:
Option 1: 4th Avenue – B/D express, N local; Brighton – Q express, R local
[Fig. 1] Option 1 track map. Original belongs to vanshnookenraggen.
[Fig. 2] Option 1 route map, via Brand New Subway.
Under Option 1, the Q shifts from local to express on the Brighton Line, terminating at Brighton Beach. The B replaces the N via 4th Avenue express and Sea Beach, and the N replaces the R via 4th Avenue local. This is a modified version of the B/N swap I originally proposed.
Option 2: 4th Avenue – N/Q express, D local; Brighton – B express, R local
Under Option 2, the Q replaces the D via 4th Avenue express and West End, while the D replaces the R via 4th Avenue local. This is a modified version of the D/Q swap I originally proposed. This option requires one less service change than Option 1.
Under either option, you could retain the W between Astoria and Lower Manhattan to beef up Broadway local service. Since both options untangle the infamous Gold Street interlocking north of DeKalb Avenue station, the recommended option will ultimately depend on ridership preferences. In my original South Brooklyn post, I recommended the D/Q swap, which would lead to Option 2. However, I think Option 1 may be the better option, which requires the B/N swap. What do you guys think?
Look for additional updates on NYTIP in the near future before I continue the series. There’s a lot more to discuss! Until next time!