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| Re: Subway Planning (1325665) | |||
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Re: Subway Planning |
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Posted by randyo on Thu Nov 27 14:20:53 2014, in response to Re: Subway Planning, posted by BusRider on Thu Nov 27 00:03:40 2014. At the time I started in scheduling all RT schedule makers were wither T/Ds or yardmasters so they had a good working knowledge of the system and where the appropriate switches were located. Also midnight GOS were 1201 A -500 A Tues to Sat with Sat GOs generally running till 600A. That meant no service disruptions on Sat or Sun nights. Of course GOs on elevated structures ran during the day and were usually, 900 A to 300 P M - F so that neither rush hour was impacted. Occasionally there were weekend GOs and those usually ran from 700A to 700P but those were only in cases where serious emergency work had to be done. Also, only one supplement per line was allowed so that for example there would never be a single track operation on the RR in both the Montague and 60 St tubes at the same time.We almost never had GOs that shut down entire lines necessitating buses to be used as subway shuttles except in extremely rare cases. During the period from Thanksgiving Day to,New Years Day there was a moratorium on midday and weekend GOs to avoid impacting on shoppers. When the TA decided to make up for years of neglect hours of midnight GOs were expanded so that some would start as early as 900 PM and sections of lines and even entire lines would be taken out of service for entire weekends requiring the use of subway shuttles with increased frequency. In All cases whether by hand or later by computer supplement schedules were generated to cover period of the service diversion. Usually the supplement schedules were designed to blend in from and to the regular timetable of the day mostly the daily, but as more and more work was being done and more supplements required, many times several supplements had to be blended into each other and the rules about not having more than one GO on a line or moratoriums on GOs during certain seasons went by the wayside. With the various departments seeking work to be done at the same time, the number of schedule makers was increased to meet the demand of the increasing work load. The supplement schedules were not spliced into the regular timetable but rather issued as separate items. For example, in the old days the present service outages on the Q and F lines into Stillwell would not be done over a weekend like Thanksgiving and into the first week of Christmas shopping when heavy passenger traffic was anticipated, but would rather have been done earlier or postponed till after New Years. |
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