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Around the Horn

Bay Ridge area politicians call for split R train

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3 minutes ago, Union Tpke said:

How many additional TPH could be run with CBTC through here?

You’d likely be able to get to 30, maybe more idk. CBTC allows for reliable closing in in these sorts of situations, which is key to them maintaining capacity. 

Edited by RR503

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Just now, RR503 said:

You’d likely be able to get to 30, maybe more idk. CBTC allows for reliable closing in in these sorts of situations, which is key to them maintaining capacity. 

Can Bay Ridge handle 28 TPH?

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35 minutes ago, RR503 said:

My point is that it’s difficult to schedule both Astoria and QB local onto Broadway local without signaling upgrades around City Hall Curve. 22tph isn’t enough for those two corridors, and Canal short turns are, at least in today’s operating environment, quite fraught. If we’re going to deinterline Broadway, I’d like to see an investment in City Hall Lower, a rigorous intervention in terminal ops, or better yet, cessation of 11 St cut service. 

Ok what about;

(N) to 96th St

(R) to Astoria

(H) 34th St/Penn Sta to Forest Hills-71st Av via Local?

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Didn't Byford mention some de-interlining plan at one of the meetings a few months ago? (It would be interesting to know whether or not transit would consider deinterlining Broadway right now).

 

Edited by R68OnBroadway

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2 hours ago, R68OnBroadway said:

Didn't Byford mention some de-interlining plan at one of the meetings a few months ago? (It would be interesting to know whether or not transit would consider deinterlining Broadway right now).

 

Who knows. I asked a question related to Deinterlining when it comes to Fast Forward back in June. The (MTA) was doing a panel (about Fast Forward and Improving transit in Queens). When the speaker asked my question (and I even used Broadway as an example too), Byford said he was in support of the idea, but it needed to go through community Input first. 

Either way, I hope that they seriously consider it if they want to improve the system. 

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1 hour ago, Union Tpke said:

Can Bay Ridge handle 28 TPH?

Almost certainly not, though of course if you invested in high speed switches, CBTC, maybe even tail tracks...

1 hour ago, Lawrence St said:

Ok what about;

(N) to 96th St

(R) to Astoria

(H) 34th St/Penn Sta to Forest Hills-71st Av via Local?

I mean, if you're deinterlining 53 and 63 (which I assume you are given the existence of the (H), why not just run the (H) to Brooklyn or WTC and kill Canal while you're at it. 

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7 hours ago, RR503 said:

Almost certainly not, though of course if you invested in high speed switches, CBTC, maybe even tail tracks...

I mean, if you're deinterlining 53 and 63 (which I assume you are given the existence of the (H), why not just run the (H) to Brooklyn or WTC and kill Canal while you're at it. 

You need a secondary local for Queens Blvd. The only other way I see of doing it is running the (E) as the Queens Blvd Local and having the (M) run via 63rd St to only use one switch at 36th St.

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@Around the Horn You had asked about this at one point. Here are images of RR timetables someone had on eBay.

48543244937_b6093a3580_h.jpgs-l1600-174 by Union Turnpike, on Flickr

48543094991_0626c05a21_h.jpgs-l1600-177 by Union Turnpike, on Flickr

48543094921_c5b054b289_h.jpgs-l1600-176 by Union Turnpike, on Flickr

48543094876_f4a0cf5837_h.jpgs-l1600-175 by Union Turnpike, on Flickr

48543095256_744b075f7c_h.jpgs-l1600-180 by Union Turnpike, on Flickr

48543095221_c4ba45d733_h.jpgs-l1600-179 by Union Turnpike, on Flickr

48543095111_062142f3d2_h.jpgs-l1600-178 by Union Turnpike, on Flickr

 

Edited by Union Tpke
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On 8/14/2019 at 6:54 PM, RR503 said:

My point is that it’s difficult to schedule both Astoria and QB local onto Broadway local without signaling upgrades around City Hall Curve. 22tph isn’t enough for those two corridors, and Canal short turns are, at least in today’s operating environment, quite fraught. If we’re going to deinterline Broadway, I’d like to see an investment in City Hall Lower, a rigorous intervention in terminal ops, or better yet, cessation of 11 St cut service. 

In the short term (providing enough cars are available), the Astoria/QB local to Broadway needs can be satisfied with the current signal setup around City Hall

7.5 (R) from 71 Av (terminate at Whitehall St)

14-15 (W) from Astoria (continue to Bay Ridge-95 St)

*Question: What is the capacity in the 60th Street tunnel between Queensboro Plaza/11th St Cut and 57 St-7 Av? Somewhere I saw only 23 trains per hour can be scheduled southbound on the (N)(R)(W). And can this capacity be increased?

 

Also, there was a study (I don't know where it is) about separating the (N) from the (W) to improve train flow from Astoria to Manhattan and reconfiguring the switches at Ditmars Blvd to allow ~19 TPH to operate to/from Astoria

Edited by darkstar8983
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23 minutes ago, darkstar8983 said:

In the short term (providing enough cars are available), the Astoria/QB local to Broadway needs can be satisfied with the current signal setup around City Hall

7.5 (R) from 71 Av (terminate at Whitehall St)

14-15 (W) from Astoria (continue to Bay Ridge-95 St)

*Question: What is the capacity in the 60th Street tunnel between Queensboro Plaza/11th St Cut and 57 St-7 Av? Somewhere I saw only 23 trains per hour can be scheduled southbound on the (N)(R)(W). And can this capacity be increased?

 

Also, there was a study (I don't know where it is) about separating the (N) from the (W) to improve train flow from Astoria to Manhattan and reconfiguring the switches at Ditmars Blvd to allow ~19 TPH to operate to/from Astoria

There should be switches at Astoria Blvd as well to allow some trains to terminate on M track, boosting capacity.

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1 minute ago, Lawrence St said:

There should be switches at Astoria Blvd as well to allow some trains to terminate on M track, boosting capacity.

If I'm not mistaken, it was discussed on this forum Months ago that installing a switch there is not feasible. I forgot who said that though. 

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34 minutes ago, LaGuardia Link N Tra said:

If I'm not mistaken, it was discussed on this forum Months ago that installing a switch there is not feasible. I forgot who said that though. 

How come? If you install it right after 30th Av it shouldnt be a problem.

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13 minutes ago, Lawrence St said:

How come? If you install it right after 30th Av it shouldnt be a problem.

 

Not on that 30th Avenue hump you can.

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15 minutes ago, Lawrence St said:

How come? If you install it right after 30th Av it shouldnt be a problem.

That's a combination of a slope and a curve. The latter is bad, but would be manageable if not for the former (which extends beyond the curve far enough to leave little room between the tracks becoming more level and the tracks breaking away to make room for the platforms).

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1 hour ago, LaGuardia Link N Tra said:

If I'm not mistaken, it was discussed on this forum Months ago that installing a switch there is not feasible. I forgot who said that though. 

It was actually a reconfiguration of the switches at Ditmars Blvd that I'm referring to, in order to make the switch design similar to the one at 8 Av-14 St on the (L) . The center track merges into the two outer tracks, then you have a standard diamond cross-over between the two outer tracks with an increased speed limit

Edited by darkstar8983

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1 hour ago, Lex said:

That's a combination of a slope and a curve. The latter is bad, but would be manageable if not for the former (which extends beyond the curve far enough to leave little room between the tracks becoming more level and the tracks breaking away to make room for the platforms).

Isn't 167th St on the (4) the same way?

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