by path18951
I think I may have found an idea to alleviate the congestion between New York and Secaucus during the rush hour. This idea involves using both tracks for rush hour service between “A” interlocking and Allied Interlocking.
Just for clarification, before I go on with my idea, A interlocking is the interlocking just slightly to the west of Penn Station. It is where all of the station tracks merge into two tracks, No. 2 and No. 3. Even though No. 2 is normally used for eastbound service, and No. 3 for westbound service, both tracks are signaled bidirectional. Allied Interlocking is about 4 miles to the west of that. It is where the two tracks split into three tracks, No. 2, A track, and No. 3, and is the start of the Secaucus Junction complex.
For simplicity reasons, we will only discuss the evening peak period. Most trains that stop at Secaucus platform on A or B track. That is the island platform. Trains stopping at Secaucus would operate on No. 2 track from A interlocking to Allied, and then cross over to A track for the route into Secaucus. Trains that do not stop at Secaucus would operate via No. 3 track the entire way. Unfortunately, the trains stopping at Secaucus would have to enter No. 3 at the west end of Secaucus, either at Lack or Portal.
How do we schedule the eastbound trains to allow for both tracks to be used during these periods?
I remember from when I worked at Hudson Tower, it took four minutes to go from A to Bergen Interlocking, approximately 0.4 miles, or 25 seconds east of Allied. So at worse scenario, it is 5 minutes from A to Allied. Assuming nothing is perfectly on time, we will allow 8 minutes running time from Secaucus to New York.
Now, let’s dedicate the heaviest time of the evening rush hour for dual running westbound, 5:10pm until 5:40pm. Amtrak train 94 is due in to New York at 5:18pm. This means the first westbound up No. 2 track could depart New York at around 5:20pm; arrive at Secaucus at 5:28pm. The next Amtrak train, 2170, leaves Newark at 5:33pm, going through Secaucus at 5:39pm. If NJ Transit could adjust their inbound M&E, Boonton, NEC and Coast line schedules to run no inbounds during this time period, No. 2 track could be used for westbound trains.
Also, there is another gap in eastbound Amtrak service. Between trains 148 (6:25 at NYP), and 2172 (6:38pm at Secaucus), one or two more NJT westbounds could sneak west on 2 if things line up nice
I realize this is not a very reliable method, as trains are seldom exactly on time, so I would not recommend that NJT schedule additional westbound departures in this slot, but if it works out even only 60 percent of the time, it would speed things up in the very congested area in a very busy time period.
Any questions or comments would be appreciated.
Just for clarification, before I go on with my idea, A interlocking is the interlocking just slightly to the west of Penn Station. It is where all of the station tracks merge into two tracks, No. 2 and No. 3. Even though No. 2 is normally used for eastbound service, and No. 3 for westbound service, both tracks are signaled bidirectional. Allied Interlocking is about 4 miles to the west of that. It is where the two tracks split into three tracks, No. 2, A track, and No. 3, and is the start of the Secaucus Junction complex.
For simplicity reasons, we will only discuss the evening peak period. Most trains that stop at Secaucus platform on A or B track. That is the island platform. Trains stopping at Secaucus would operate on No. 2 track from A interlocking to Allied, and then cross over to A track for the route into Secaucus. Trains that do not stop at Secaucus would operate via No. 3 track the entire way. Unfortunately, the trains stopping at Secaucus would have to enter No. 3 at the west end of Secaucus, either at Lack or Portal.
How do we schedule the eastbound trains to allow for both tracks to be used during these periods?
I remember from when I worked at Hudson Tower, it took four minutes to go from A to Bergen Interlocking, approximately 0.4 miles, or 25 seconds east of Allied. So at worse scenario, it is 5 minutes from A to Allied. Assuming nothing is perfectly on time, we will allow 8 minutes running time from Secaucus to New York.
Now, let’s dedicate the heaviest time of the evening rush hour for dual running westbound, 5:10pm until 5:40pm. Amtrak train 94 is due in to New York at 5:18pm. This means the first westbound up No. 2 track could depart New York at around 5:20pm; arrive at Secaucus at 5:28pm. The next Amtrak train, 2170, leaves Newark at 5:33pm, going through Secaucus at 5:39pm. If NJ Transit could adjust their inbound M&E, Boonton, NEC and Coast line schedules to run no inbounds during this time period, No. 2 track could be used for westbound trains.
Also, there is another gap in eastbound Amtrak service. Between trains 148 (6:25 at NYP), and 2172 (6:38pm at Secaucus), one or two more NJT westbounds could sneak west on 2 if things line up nice
I realize this is not a very reliable method, as trains are seldom exactly on time, so I would not recommend that NJT schedule additional westbound departures in this slot, but if it works out even only 60 percent of the time, it would speed things up in the very congested area in a very busy time period.
Any questions or comments would be appreciated.