Quote:
Originally Posted by Socguy
Actually I have a question about the low floor design. It was my understanding that the drive to make the switch is largely due to low floor being more conducive to neighborhood integration (More frequent stops and smaller stations).
In this case, if major portions of the line end up getting buried then is it still worth it to make the switch? Once you go underground are you not just building a subway, the purpose of which is to transport large numbers of people long distances at higher speeds, in part by isolating them from the neighborhoods they cross? Doesn't that basically defeat the primary reason for going low floor?  If so, is there something to the argument that we should keep our equipment standardized as much as possible?
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*sigh* Well, we've never talked about this one before.
1. No proposed alignments of the green line are even 10% underground, and roughly 2/3 of the stations will be at grade. So your whole premise is moot.
2. The floor height of a rail vehicle has nothing to do with the frequency of stops it makes.
3. The primary reason for low floors are to minimize the impact of stations in neighbourhoods, as you have said - and there are plenty of neighbourhood stations. Secondary reasons include cheaper station construction, more pleasant riding conditions and easier procurement.
4. The current plans for the green line involve busways before LRT; low floor platforms can serve both vehicles -- if anything is a standard on this corridor, it's low floor.
5. The point of having standard equipment is to save costs; having standard equipment is in itself no benefit to anyone but the OCD. The potential benefits of having similar rail vehicles on different lines is very low in this case; the green line does not connect to the red/blue, and the maintenance and storage facilities on the red/blue lines are already pretty well at capacity. We already do not have standard rail equipment; by the end of next year, there will be four different models of train on our tracks.
6. In the end, the existence of high floor platforms somewhere in the city shouldn't affect our decision on the green line; there are benefits to low floor vehicles in terms of potential station reuse and neighbourhood impacts. There could be additional maintenance costs for low floor vehicles, there could be a tighter turning radius permitting a cheaper alignment, purchase of low floor vehicles could be cheaper or more expensive. These should drive the decision.
So no, there's nothing to the argument that we should keep our equipment standardized as much as possible.