Quote:
Originally Posted by BCPhil
It's not that just Broadway is a busy road, the real problem is that Broadway crosses every other major road in the city. Between Commercial and UBC an LRT would have to deal with no less than a dozen MAJOR crossings. I just don't see how an LRT can contend with these crossings. Signal privatization might work well on Boulevards in Europe where there is room for crowds to gather near the ROW and large distances between intersections, but prioritizing signals at a place like Granville & Broadway would be near impossible. A pedestrian has to have time to cross 7 lanes worth of traffic, as there would be no room for people to stop half way and if the light spontaneously changes for a tram. Could you see it where a group of 50 people are crossing the street and suddenly the light changes and everyone has to freeze or else they are hit by a tram?
Between Commercial and Arbutus, an LRT would have to contend with traffic crossing the ROW at Commercial, Clark, Glen, Fraser, Kingsway, Main, Quebec, Manitoba, Yukon, Cambie, Ash, Heather, Willow, Laurel, Oak, Hemlock, Granville, Fir, Burrard, Arbutus. These intersections can not be closed into right in/out only. Traffic desperately needs to cross (at least left turns) at all those. I just don't see how an LRT with high speeds and high frequencies can work. There is no way signal prioritization can 100% solve this problem. There will still be times when a tram will have to stop at a signal because it's travelling to slow or stay at a station too long. Time needs to be given for cars and pedestrians to clear the tracks under signal prioritization, and if the trains have a low headway in both directions, I don't see how that will be always possible.
I can see why Translink put in 2 tram lines in one of the options. If going to UBC from already being on the Expo Line, it would be much faster to transfer at Main street and take the LRT on the segregated ROW along False Creek and through South Granville than transfer at Commercial and ride down Broadway. Going that way would cut out most of the major intersections from the trip, leaving only Burrard and adding 4th.
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I can't help but think that you exaggerate somewhat the problems that streetcar would face on Broadway. First, you have to stop thinking that LRT on Broadway would be running at the speeds that Skytrain can reach. If the line is going to run at street level, even if it has a dedicated corridor, it won't be able to run much faster than actual traffic.
The great advantage of driver operated streetcar is that the driver would recognize the presence of a pedestrian on the road ahead of him and choose not to run him over. The lights at those major crossings already run long enough for most people to cross. Whether it is a streetcar waiting to transit Granville or the 99 bus changes nothing to the timing.
Just because the light turns green doesn't mean you have to go, although that seems to be the general opinion over here.
Left turns can be timed so that those vehicles would turn left after a tram has transited the crossroad. The question of dealing with smaller crossings could be solved but would not be as ideal as simply banning left hand turns there.
Boulevards in Europe are not much different than our major arteries. Some are admittedly much larger, but most streets that streetcars run on are of similar size.
The reason that Streetcar or street level LRT does not fill the need for Rapid Transit to UBC is because neither of them are true rapid transit. There is really no great obstacle to running either of these on Broadway, technically the solutions all exist and have been applied elsewhere over and over again.
But if the goal is to move the most people at the greatest speed across the length of the corridor, than those modes will not achieve these goals as well as Skytrain or any other grade separated LRT for that matter..
They will make a major difference to transit patterns along the corridor but those most affected will likely be short distance commuters who do not put speed as highest priority.