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Originally Posted by waterloowarrior
So there are the 3 intersections that would be tunneled.... what about the 10+ other ones with through traffic? and then the 10+ other ones that let people do left turns... ? Are they all going to be closed?
Trains will be coming every 2 minutes in two directions by 2031.. (unless we stop the East Trains after downtown...) is this possible without a fully or almost fully grade-separated system? What is the Calgary experience kyle_olsen? The systems I have gone on with median LRTs still have the train stopping at intersections sometimes, and can't go as fast as a grade separated system, but maybe I've gone on the wrong ones.
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Outside of downtown, the LRT has 100% intersection priority. It is a train, if the trains is coming, the gates go down. Just like a freight train. People in Calgary came to accept this since the first line runs parrallel to a rather mainline CPR track. There is currently one intersection on the South line that will not be able to function with maximum theoretical frequency, and it is to be grade separated within the next five years. The thing is the line will be running five car trains for many years until we reach the need to have five car trains and minimum headway.
Again, allowing the a full ROW for rapid operation, with 100% priority is a political problem, not a technical one. For trains to pass at speed they build the ROW to 15 m, which is rather wide, and allows lots of room for cheaper equipment, and in-service maintenance.
The LRT in the NE, where it is in the roadway median, isn't nearly as bad as people think, it is all perception. The NE line isn't being designed to the same capacity, likely will never need trains more often than every 4 minutes with four car trains.
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Originally Posted by Franky
Interesting. Calgary is used as a model of the best LRT plan, and you tell me this NE line 🞵🞵🞵🞵🞵. Won't cut and cover on Byron be expensive with all those utilities to move?
That's probably what makes the Calgary LRT cheap. In a way, if you go with grade separated everywhere, why not just use buses or trolley-buses? You don't need "big bunch" ability, smaller bunches will do.
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Because the main thing that makes LRT great is you need far fewer drivers, to move the same amount of people. This is what saves you money in the long run, and helps justify future expansion. While Calgary built its initial lines, it fired bus drivers. Lots of bus drivers.
The NE isn't the best, but it is far from the worst, and is very very well used.
If there is any lesson to be learned from LRT in Calgary is that it is better to build alot more mileage of LRT on the cheap, than to build a small amount in optimum configuration. You can always fix it later, and you end up with better end results with lower costs in the long run.