Quote:
Originally Posted by Bassic Lab
Just a couple minor points:
7 Ave will not be able to manage the same headways with four car trains as with four car trains.
An 8 Ave Subway with modern signalling, when taken in isolation, would be able to beat 120 second headways; 90 should be doable.
I would also add that post construction of the 8 Ave Subway, capacity boosts to the NW-S line will return to affordability very quickly. Heritage Drive and 25 Avenue would likely pose immediate issues and need to be addressed concurrently with Subway construction, unless Roads builds interchanges first, but the proposed interchanges are not overly complex and wouldn't break the bank. After that though we'll have plenty of spare capacity and additional capacity boosts won't cost much. Five car trains would mean rebuilding SAIT and 39 Ave, minor track realignments, and platform extensions. It would be comparable to the current move from three to four cars.
The NW-S line is, outside of downtown, just ridiculously close to being grade separated. It wouldn't even be that expensive to grade separate it. The W-NE line is different. Large portions of it, pretty much all of 36 St, would need to be completely rebuilt.
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Yeah, I really hope that the city really does some hard thinking and decides to separate the most prominent crossings of the 201 line when they build the Subway, with eventual total separation being the goal. I think the biggest challenge, at least in the northwest, would be the two crossings between Brentwood, Lions Park, and SAIT stations.
Is there still no timeline at all for subway construction?
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