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Originally Posted by Aylmer
I partially agree. I definitely agree that looking at ION's overall speeds (25km/h) is overly optimistic because it has a lot of off-street portions. The urban section is more representative. However, there are some important distinctions, notably the number of sharp turns (which have to be taken very slowly), significant number of well-trafficked cross-streets, and complex turning movements which make signal priority less effective than it would otherwise be. Bank street, on the other hand, has a grand total of 4 non-local cross-streets, is straight as an arrow, and would not benefit from much simpler signals by not sharing the street with cross-traffic.
In any case, maybe I'm looking at this wrong, but GRT says it's an even 15 minutes for the 4.8 km between Borden and Willis Way stations = 19.2 km/h.
Considering that's still including all the above constraints, 20 km/h seems a reasonably conservative number.
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You're absolutely right about the schedule. I apologize. I looked at the pdf timetable for Mill to Waterloo Public Square a while back and I must've accidentally used the Laurier-Waterloo Park time instead of the Waterloo Public Square time.
- Mill to Waterloo Public Square is is 21 mins over a 6.3 km stretch, which equates to 18 km/h
- Willis to Borden is 18 mins over 6 kms ---> 20 km/h
In other words, you were pretty on point with the 20 km/h estimate, so my apologies once again. Using your estimates, the overall time difference for Queen to Billings works out to about 13.5 mins by tram vs about 7.7 mins by subway (35 km/h).
Quote:
Originally Posted by Aylmer
Yes, but both of these numbers assume that people materialize on the train and that their destination is the platform. My whole point is that the useful metric is the average door-to-door trip, including the average walk to and from the station (one quarter of the average stop spacing on both ends), platform access time, and waiting time.
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Just to be clear, I wasn't arguing your point about the door-to-door time savings with the tram option. I fully acknowledge that the surface tram option is better for local trips. My point was purely related to the overall run time between Billings and Queen.
Quote:
Originally Posted by Aylmer
Entertaining your 14 km/h, it's 19.5 minutes for the underground, and 23 minutes on the surface. At what I consider a much more reasonable 20 km/h, it's 17.5 minutes. But even at a 3.5 minute difference, it's a pretty slim difference for the added cost. And even then... even with a transfer at Hurdman, you can already get there in almost the same amount of time (24 minutes).
And keep in mind that this is the most favourable distance for an underground option. For all trips shorter than the entire length of this hypothetical line, its access time means it falls further and further behind the surface alternative. So at absolute best, we'd be paying 3-4x more for a line which results in comparable trip times to today (via Transitway) between the termini, plus significantly longer trips for all other trips.
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You're correct in theory, but all this hinges on the ability to implement an exclusive ROW along Bank north of Billings. Otherwise, we're looking at a mixed traffic scenario that will certainly result in a lower average speeds. And as I mentioned earlier, I think that's out of the question south of the Queensway. There's also the question of station sizes and space for them, which will hinge on anticipated ridership. If we intend to turn this line into the main North-South transit spine 25 years from now, some stations will need to be fairly large, especially for places like Lansdowne.
Quote:
Originally Posted by Aylmer
I think it's difficult, because you're right that there aren't a lot of people who knowingly go out of their way to promote the idea of "facilitating cars". But there are a lot of more passive ways in which we unknowingly end up accomplishing the same thing, such as the quote below.
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I understand what you're saying, but that statement implies that facilitating cars is the principle motive of the subway idea when it clearly isn't. It's just a bad faith argument. If anything, a subway would maintain the status quo for Bank, but it wouldn't rule out a more sustainable street configuration by any means.
Quote:
Originally Posted by Aylmer
It's not that the concerns aren't valid or wouldn't require some sort of resolution. It's rather that when you really think about them, they're not really that inextricable. But if you don't go out of your way to really look at it, it's easier to conceive of spending billions boring a tunnel rather than, say, having "authorized vehicles only" signs or parking the occasional delivery vehicle 20m away on a side street. We've now grown 3-4 generations in the automobile age, so like with so many other things, it's natural that we have certain assumptions which we don't question, or solutions which don't immediately come to mind. To see the ether we've grown up in requires a lot of effort and will, and unless you're particularly interested in that particular field, I don't really blame anyone for not putting in the work.
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What I want and what the reality on the ground is are two very different things. I typically try to meet them half way as means to push the envelope in softer manner. Some of these car-free ideas are still radical to a lot of people and we're not going to get anywhere by trying to force it down their throats. I see it as an iterative process.