Quote:
Originally Posted by jwslam
Digging a tunnel for buses now, and converting later...
That's like saying let's build a 50 storey residential skyrise now, then add the necessary plumbing, HVAC, and electrical later.
*Don't argue that you can fit all that in later. As you can see already the green line is running of different tech (floor trains) than our current red/blue lines. Tech changes and the cost to retrofit is not currently included in your math. Not to mention the costs of paving your tunnel for BRT, then having to tear up the pavement to put in tracks.
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Seattle did this with their downtown bus tunnel and now LRT tunnel. Never looked into if it was effective.