Quote:
Originally Posted by Dave2
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To be honest, ALRT was probably at least partially a political experiment.
However, it was also at least partially the best and only choice for significant cost-savings in the downtown area, through the reuse of the Dunsmuir rail tunnel. Linear induction motor trains are very low height, and they really fit the low-height double decker tunnels downtown. There was (and might still be) no other technology option that would have allowed for a reuse of this tunnel.
Any other technology option would have required a new, more expensive and probably deeper bored tunnel, with inferior connections compared to our current setup The original 1975 plan. (there's some graphics on Voony's Blog, and I also borrowed a book from KPU's library about it and have read extensively into it) had the line using Cambie to get to Cordova, which would not have allowed it to service the office districts at Granville and Burrard today nearly as well.
Whatever advocates of the time didn't realize that, but I don't blame them.... LIM propulsion was a very new concept at the time, one not well discussed, and these benefits would have not been obvious to the general public.
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In other news, DMJ seems busy getting some consultants to make some Canadian rapid transit system platform length graphics right now. I find this attempt hilarious, as he's trying to justify that these systems have higher capacity because of their longer trains and platform lengths, yet completely fails to take into account SkyTrain's automatic train control and max theoretical 75 seconds frequency.