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| Re: Second Av Subway Ridership Growing Rapidly (1426220) | |||
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Re: Second Av Subway Ridership Growing Rapidly |
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Posted by Stephen Bauman on Thu Feb 2 05:22:28 2017, in response to Re: Second Av Subway Ridership Growing Rapidly, posted by AlM on Wed Feb 1 16:17:20 2017. Let's put it this way. They send not quite 30 trains into GCT from the north in the peak hour, and they have slightly fewer coming out than go in.What's important is whether or not those 30 trains are put in at uniform intervals. Here's the current local schedule, showing GC arrivals for the local. "trip id";"route";"start";"departure";"arrival" "038000_6..S02R";"6X";"Pelham Bay Park";"06:20:00";"07:01:30" "038900_6..S03R";"6";"Parkchester";"06:29:00";"07:06:00" "038800_6..S02R";"6X";"Pelham Bay Park";"06:28:00";"07:09:30" "039650_6..S03R";"6";"Parkchester";"06:36:30";"07:13:30" "039500_6..S02R";"6X";"Pelham Bay Park";"06:35:00";"07:17:30" "040000_6..S02R";"6X";"Pelham Bay Park";"06:40:00";"07:21:30" "040850_6..S03R";"6";"Parkchester";"06:48:30";"07:25:30" "040800_6..S02R";"6X";"Pelham Bay Park";"06:48:00";"07:29:30" "041600_6..S03R";"6";"Parkchester";"06:56:00";"07:33:30" "041400_6..S02R";"6X";"Pelham Bay Park";"06:54:00";"07:37:30" "041900_6..S02R";"6X";"Pelham Bay Park";"06:59:00";"07:42:30" "042750_6..S03R";"6";"Parkchester";"07:07:30";"07:46:30" "042650_6..S02R";"6X";"Pelham Bay Park";"07:06:30";"07:50:00" "043500_6..S03R";"6";"Parkchester";"07:15:00";"07:54:00" "043400_6..S02R";"6X";"Pelham Bay Park";"07:14:00";"07:57:30" "044200_6..S03R";"6";"Parkchester";"07:22:00";"08:01:00" "043950_6..S02R";"6X";"Pelham Bay Park";"07:19:30";"08:04:00" "044250_6..S02R";"6X";"Pelham Bay Park";"07:22:30";"08:06:00" "045050_6..S03R";"6";"Parkchester";"07:30:30";"08:10:30" "044900_6..S02R";"6X";"Pelham Bay Park";"07:29:00";"08:13:30" "045650_6..S03R";"6";"Parkchester";"07:36:30";"08:16:30" "045450_6..S02R";"6X";"Pelham Bay Park";"07:34:30";"08:19:30" "046150_6..S03R";"6";"Parkchester";"07:41:30";"08:22:00" "045850_6..S02R";"6X";"Pelham Bay Park";"07:38:30";"08:24:30" "046200_6..S02R";"6X";"Pelham Bay Park";"07:42:00";"08:27:00" "046950_6..S03R";"6";"Parkchester";"07:49:30";"08:30:00" "046550_6..S02R";"6X";"Pelham Bay Park";"07:45:30";"08:32:30" "047500_6..S03R";"6";"Parkchester";"07:55:00";"08:35:30" "047250_6..S02R";"6X";"Pelham Bay Park";"07:52:30";"08:38:30" "047650_6..S02R";"6X";"Pelham Bay Park";"07:56:30";"08:41:30" "048350_6..S03R";"6";"Parkchester";"08:03:30";"08:44:00" "048000_6..S02R";"6X";"Pelham Bay Park";"08:00:00";"08:46:00" "048350_6..S02R";"6X";"Pelham Bay Park";"08:03:30";"08:48:30" "049100_6..S03R";"6";"Parkchester";"08:11:00";"08:51:00" "048800_6..S08R";"6X";"Pelham Bay Park";"08:08:00";"08:53:00" "049550_6..S03R";"6";"Parkchester";"08:15:30";"08:55:30" "049300_6..S08R";"6X";"Pelham Bay Park";"08:13:00";"08:57:30" "050000_6..S03R";"6";"Parkchester";"08:20:00";"08:59:30" "052000_6..S06R";"6";"3 Av - 138 St";"08:40:00";"09:02:00" "050000_6..S08R";"6X";"Pelham Bay Park";"08:20:00";"09:04:00" "050750_6..S03R";"6";"Parkchester";"08:27:30";"09:06:30" "050550_6..S08R";"6X";"Pelham Bay Park";"08:25:30";"09:09:30" "053100_6..S06R";"6";"3 Av - 138 St";"08:51:00";"09:12:30" "051650_6..S03R";"6";"Parkchester";"08:36:30";"09:15:30" "051500_6..S08R";"6X";"Pelham Bay Park";"08:35:00";"09:19:00" "052400_6..S03R";"6";"Parkchester";"08:44:00";"09:22:30" "052200_6..S08R";"6X";"Pelham Bay Park";"08:42:00";"09:26:00" "054850_6..S06R";"6";"3 Av - 138 St";"09:08:30";"09:30:00" "053500_6..S03R";"6";"Parkchester";"08:55:00";"09:33:00" "053200_6..S02R";"6X";"Pelham Bay Park";"08:52:00";"09:36:30" "054300_6..S03R";"6";"Parkchester";"09:03:00";"09:40:00" "054000_6..S02R";"6X";"Pelham Bay Park";"09:00:00";"09:44:30" "055200_6..S03R";"6";"Parkchester";"09:12:00";"09:49:00" "055050_6..S08R";"6X";"Pelham Bay Park";"09:10:30";"09:53:00" "057700_6..S06R";"6";"3 Av - 138 St";"09:37:00";"09:57:00" You will notice only two instances where Grand Central arrivals are spaced at 30 tph: 8:04:00/8:06:00 and 9:02:00/9:04:00. In the first instance both trains originated at Pelham Bay Park. However, the follower left 3 minutes after its leader. The follower was able to make up 1 minute on its leader despite this being the peak period. The second instance is more complicated because the leader started at 3rd Ave and the follower from Pelham Bay Park. Here are snippets of their running taken at different stops along the way. At 3rd Ave St: "050750_6..S03R";"6";"Parkchester";"08:27:30";"08:45:00" "050550_6..S08R";"6X";"Pelham Bay Park";"08:25:30";"08:48:00" "053100_6..S06R";"6";"3 Av - 138 St";"08:51:00";"08:51:00" "051650_6..S03R";"6";"Parkchester";"08:36:30";"08:54:00" At 86th St "049300_6..S08R";"6X";"Pelham Bay Park";"08:13:00";"08:47:00" "050000_6..S03R";"6";"Parkchester";"08:20:00";"08:49:00" "052000_6..S06R";"6";"3 Av - 138 St";"08:40:00";"08:51:30" "050000_6..S08R";"6X";"Pelham Bay Park";"08:20:00";"08:53:30" The follower has made up that minute and is now 2 minutes behind its leader. You will also notice that the 0825 PBP and 0851 3AV have made up 30 seconds on their leaders. What you have is an example of followers making time on their leaders, and not having their headways being spread out. This suggests that 30 tph operation is quite possible and the principal problem will be to keep followers from trying to close the gap to their leaders. |
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