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| Re: What Would Happen If The 60th Street Tunnel Were Closed? (1353791) | |||
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Re: What Would Happen If The 60th Street Tunnel Were Closed? |
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Posted by Michael549 on Tue May 26 14:37:22 2015, in response to Re: What Would Happen If The 60th Street Tunnel Were Closed?, posted by randyo on Mon May 25 21:23:55 2015. From a previous message: "The public timetable doesn’t contain all the timepoints, but they are in the data base for all the lines that pass through those points. The running time between the 11 St cut an Lex Av is the same of all lines passing through those timepoints. When single tracking in the 60 St tube was commonplace, it was possible to run a 20 min headway on whatever the only line was running there at the time"Assumptions: a) One idea is that the tunnel outage would last for a year, and would extend to the rush hours, day-times, evenings, weekends, etc. Similar in kind to the year-long outage on the Montague Street Tunnel for the R-train. b) That one working track could be used for bi-directional travel between Manhattan and Queens. I've suggested that repair work take place on one track while the other is in service, and then at the half-way mark, the repaired track is used for bi-directional service while the "other" track is repaired. c) That the ridership of the Astoria segment is very high during the rush hours and day-times. Due to the high ridership at all hours, a combination of approaches be taken to help transport the riders, as outlined in a previous message. ------------ When I read the message that I replied to - that concerned a 30-minute interval between trains traveling bi-directionally between 60th Street-Lexington Avenue and Queens-Borough Plaza, or the "11th Avenue Cut" - I simply believed that a 30-minute wait between trains is just too much of a waiting time, especially for the rush hours, given the crowds of the Astoria line. That was why I started to look at the time schedules, etc. I concede that maybe there are created schedules for 20-minute intervals for bi-directional travel for a tunnel project like this. However for a line that has service and packed rush hour trains every 5 minutes (combined N & Q trains in Astoria) to go a train every 20 or 30 minutes between Queens and Manhattan DURING the rush hours is a tall order, and a great reduction in service. (I agree that maybe in the day-times, late nights or maybe on weekends, such a 20-minute schedule could meet the needs of the riders. True, I suggested that the bi-directional travel would NOT take place during the rush hours. How many trains can be stored on the middle track on the Astoria line anyway?) I believe that if such a project had to be under-taken, that the schedulers and dispatchers at the MTA, as well as the transit planners would come up with a good comprehensive plan to manage this kind of event. Yes, I did list several ideas in another message, but that was only a starting point. Mike |
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