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| Re: Lexington Avenue Line TPH (259706) | |||
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Re: Lexington Avenue Line TPH |
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Posted by Stephen Bauman on Sun May 28 20:55:46 2006, in response to Lexington Avenue Line TPH, posted by Easy on Sun May 28 18:25:50 2006. They used to operate 32 tph on the Lex. The also operated 36 tph on the Flushing Line and according to BOT reports they used to operate 42 tph on the Third Ave El.The theoretical capacity is based on a train's braking rate, its acceleration and the dwell time within the station. For trains with NYCT's braking/acceleration characteristics and a 30 second dwell time, this works out to around 40 tph. What, if anything, is Moscow doing differently? Basically Moscow understands what is required to maintain high capacity operation and does it. Schedules are made to the second - not the 1/2 minute like NYCT. Moscow also provides feedback at each station to the operating crew as to how well they are adhering to the schedule. This feedback is implemented by resetting upcounting clock. The clock counts the number of seconds since the last train left the station. If the schedule calls for 40 tph, then all the crew has to remember is 90 seconds. Increasing peak service requires managerial talents that is beyond NYCT's present capabilities, as shown on April 13, 2002. On that Saturday, NYCT tried unsuccessfully to operate 30 tph on the Flushing Line. The did not succeed despite a score of managers at the 111th St Station. NYCT has taken another tactic. They claim that the Lex is operating at capacity. Their anecdotal evidence consists of the crowding, slow trains and safety. (They was never a serious accident on the Lex, when they operated at 32 tph.) They have convinced the public that their only salvation will be the 2nd Ave Subway. (Of course, if the Lex operated at previous service levels, the need for a 2nd Ave Subway couldn't be justified.) The lack of a 2nd Ave Subway has absolved NYCT's management of any responsibility to do better with what they have. These managers will be collecting their pensions, when the 2nd Ave Subway becomes operational. |
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