Thanks for the video!
Quote:
Originally Posted by GlassCity
Speaking of capacity, I just started taking the Canada Line in the early mornings, and pass ups occur occasionally. Why were the platforms built so much shorter than on the Expo Line? It's alright for now, but I'm sure it'll get worse.
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Because the ultimate capacity for the line was established at (I think) 14,000 ppdph - based on Richmond being on a flood plain and an earthquake zone (it was not originally a "Growth Concrentation Area" under regional plans - but Richmond objected and I think it was included. (so blame the politicians).
It was up to the bidders to determine how to achieve that ultimate capacity.
Wider trains (Rotem 3.0m vs MKII 2.6m) allowed for shorter platforms to achieve the ultimate capacity. Shorter platforms also allowed shallower tunnel construction (closer to the surface) while maintaining achievable grades between stations.
Longer platforms would have required deeper tunnels to lessen the grades between stations - which in turn would have required bored tunnels, rather than cut and cover. i.e. completely disrupting the costing model.
and as mentioned, the line is no where near capacity. People just don't like crowds.