Quote:
Originally Posted by *Stardust*
Once they build the green line and the 8th ave subway, could they build a subway for 7th ave to have the whole downtown system underground?
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Well, if we did the math of
1) at current rates, how many years would LRT usage increases eat up the extra capacity of 4 car trains, and what would the usage be at that point
2) if we then cut that ridership value in half (ie separated lines by burying one under 8th) what would that rate be
3) at current rates, starting from however many years it took 1) to occur, what year would we match the rates once in again in 1) in spite of halving the ridership due to separating them.
at that point we'd have to bury 7th so we could have more frequent or longer trains.
So found a chart that showed that more or less from 1995 - 2005 LRT ridership increased 5% per year. So using those likely wildly inaccurate #s
1) 4 car trains would spread 3 cars full of people over 4 cars, so each would be 75% full.
2) at the 1995-2005 rates, by 2022 those 4 cars would be as full as each of 3 cars were in 2016
3) if those cars were half as full due to twice as frequent trains after burying one under 8th in 2022, at the 1995-2005 rates, by 2037 they'd be full again.
of course my numbers are based on a tiny graph in a pdf, and this doesn't take into account the green line removing riders from the NW/S-Central line, nor the fact the NW/S-Central line is busier than the WLRT/NE line.