Quote:
Originally Posted by powderjunkie
Seems a little silly to only do one of the lines underground, but not both? Even if Blue/red are tripping over each other a little bit right now, it's not like they'd be able to increase the rush hour frequency of either by much if they were separate? For travelling within downtown, it's really nice to be able to hop onto either train any time of day...so it's one slight improvement at the cost of another, plus infrastructure costs...
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The potential capacity increases would be significant. The bottleneck for both lines is 7th Ave. Separating the lines basically frees up a lot of headway. If you're on 7th Ave now, replace every Red Line train with a Blue Line Train (or vice versa), and the frequency increase would be noticeable.
Now that is just a potential capacity increase since actually maxing that frequency with the necessary cars would be a multi-billion dollar endeavor on it's own.