Full disclosure, I've never even been to Durham and only learned of this project the other day. I'm actually a big proponent that ACCT can be a viable element to a transit system, which is what piqued my interest. But this didn't pass the initial smell test, and there seems to be some dodgy logic in the reports I've glanced through.
But I see now that this isn't ACCT vs BRT, it's ACCT vs bus lanes (with a few sections resembling true BRT). So in that case I can see the scales tilting a bit, but a lot of things still seem very questionable.
1. Because the ACCT is much faster than a bus. Making driving slower tends not to convert people at a particularly fast rate as drivers have alternate routes to minimize travel time impacts. Besides, I'd rather make everyone's ride faster than everyone's slower. ACCT attracts more as it can get you from UOIT to Oshawa GO in fewer minutes than the BRT, that's it. ACCT lets people drive AND take transit.
They peg the perceived time savings as the same for each option, but that is against the current situation
And a bit on how they arrived at that figure:
There's a lot to unpack and speculate on there, but I struggle to see ACCT = faster = more ridership (especially when the bus lanes option is slightly longer with a bigger catchment population)
2. the gondola's work no different than a bus in this manner.. if one gondola is full, you got to wait for the next one just like a train or bus. Not sure why a gondola triggers a unique need here. A full gondola arriving at a station behaves exactly the same as a full bus.
3. Is the peak capacity of ACCT anticipated to be reached within the lifetime of the infrastructure? Given the context here, I doubt it. It's the same kind of "issue" raised with the Ontario Line. Scale the infrastructure to the demand. You don't need some massive piece of infrastructure on Simcoe St simply because it's a small city of 300k which is just never going to need 10,000+pphd capacities.
This poses a big question on how they arrived at their operational costing...because it sure seems like they simply matched the bus option to ACCT's capacity, instead of forecast demand...
Which shouldn't be the case, at least not for the whole lifecycle of the project. But if there is danger of flirting with that capacity limit, then you probably want to hedge to the option with a next step of mode progression instead of the one that eventually ends up as a liability (unclear if the analysis goes that far).
But the thinking seems to be that the city should only worry about OPEX since they won't pay much CAPEX. And I kind of admire that bravado and would love to see them pull it off!