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Originally Posted by Dado
Except that's not what happened. That was just speculation on their part which you've just embellished with talk of "overaggressive car drivers". Someone on that page just "guessed" that it was traffic at Nicholas-Waller. But rationally, for it to create the tailback it did all the way back to Lees, this traffic would have to be blocking the buses over the course of several cycles in a row. At 180 buses/hour, there's about three buses arriving per minute - so that queue had to form over many many cycles, not just one or two. There's about 1.5 km to Lees from Waller, and assuming an average bus length of 15 m (12 for standard, 18 for artics), we're looking at about 100 queued buses and upwards of 30 minutes' of queueing.That would have required the intersection to be blocked pretty much all the time with no possibility of getting a bus through, with cross-traffic either never moving and clearing and/or always getting reblocked if it did move. Moreover, a good chunk of the buses (i.e. a few minutes' worth) would be able to get through on one light cycle if the intersection cleared even once every few cycles (the limiting factor being the number of buses "ready to go" at Laurier Station up to Nicholas-Waller). The likelihood of such a thorough grid-locking over such an extended period of time is improbable. So something else had to be the cause, or at least the main cause.
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For westbound buses, the green light at Waller/Nicholas does not last as long as for eastbound ones, because of the left turn signal for northbound traffic coming off the Bridge. Further, due to the location of the westbound Transitway route (i.e., at the north end of the intersection), they are more likely to be impacted by northbound or turning traffic that is trying to sneak in. I can easily see a backup of that size building up, especially westbound at peak times, if there is consistent traffic interference.
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Had you visited the flickr link you would have seen one more key photograph and you would have seen that a cause other than blockage at Waller had to be the case, but you're seeing the facts you want to see because you've jumped to a conclusion as to the specific cause:
http://www.flickr.com/photos/ottawab...n/photostream/
Same day, same bus jam - except it's also on the McKenzie King Bridge west of and therefore beyond McKenzie King Station and the Waller intersection. At a minimum, this bus jam extended to Elgin and likely extended all the way across downtown Ottawa on Albert. This wasn't caused by a problem at Nicholas. If the problem had been at Nicholas, the bridge would have been devoid or virtually devoid of buses in the westbound direction.
So much for your investigation. All I had to do was keep pressing the next picture button at flickr.
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Actually, I HAD visited the flickr link and the Mackenzie King Bridge pictures are not inconsistent with eyewitness accounts. When the original blockage would have been overcome, the long backup simply would have migrated farther downstream into the downtown core where would-be passengers would have been accumulating over an extended period time at the height of the afternoon rush hour. One would fully expect that the downtown stations (Metcalfe Station on Albert in particular) and the buses would be overwhelmed, since, for various reasons, they simply do not have the ability to cope with such high volumes in a short amount of time. Hence, pictures of backed-up westbound buses on the Bridge were not surprising to me at all.
Other factors may well have aggravated the situation. For example, I’m not sure if they were still blocking a lane on Albert so that they could do geotechnical testing for the tunnel. The testing occurred at around the same time, but they may well have moved on by then to a less sensitive location. Elgin (northbound) may be have been congested as well since there is a lot of construction activity downstream. Similarly, problems on Wellington Street can impact the flow on north-south streets downtown.
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Which makes the rest of your post below speculative rubbish.
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You are right, Dado. When I take the bus at rush hour or I walk around downtown during that time period and see the problems I keep bringing up, I must be hallucinating. It must be the diesel fumes.
As for the flexibility of buses, it thankfully came in handy last weekend (I can’t remember whether it was Saturday or Sunday morning). There was a nasty car crash on Slater. Hence, the section between Bronson and Bay was closed by the police, and eastbound buses had to be rerouted using Bronson, Laurier and Bay. It added a couple of minutes to my trip, but otherwise it was fine. A surface LRT line on Slater, on the other hand, would have been brought to a full stop. Will the Friends of the O-Train put that on their website? I highly doubt it. But there’s no reason not to, because a lot of O-Train riders use the Transitway to get to/from O-Train stations like Bayview (in fact, a few of them were likely on the very bus I was riding on).
And what about the time the window fell from the hotel onto Albert Street a few years back? A freak and totally unacceptable occurrence to be sure, but it happened. Although it was slow going and they were not given the priority they deserve given the number of people riding in them, the buses were rerouted and were able to move.