The busiest PVTA route during the academic year is the 30 in Amherst, averaging 780 boards/mile, higher than most Boston commuter rail lines
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What happens when you electrify the Needham Line and dramatically boost its frequency? How high can we push those numbers?
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Just for a sense of scale--Boston's Blue Line hits 11,253 boards per mile. London's Victoria Line = 42,031 b/mi.
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Tokyo's Chiyoda Line = 75,425 b/mi Hong Kong's Tsuen Wan Line = 105/830 b/mi I expect that's close to the upper bound for a single line
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by volume through the main shared section; the Lexington Avenue line has about the same volume of people as the lines above
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you have an example right near home but you use ones in Asia!
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how'd you figure out the passenger density? Paris RER A I think is close to Lex Ave density & its commuter rail!
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I found (on wiki I think) ridership by trunk line; sum of boards for each stop on Lex Ave line
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high frequencies are partly the result of high demand rather than the cause
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partly, yes! but demand also relates to frequency--higher freq service is more useful product, more demand for it than for low freq
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I figure *total* demand is a limit as frequency approaches infinity...but in real world frequency has hard limits at around 90-120 seconds
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Exceeding those limits means building parallel lines--for everything else, tho, you can get a feel for where diminishing returns begin...
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