Quote:
Originally Posted by waves
One station costs about $30 million. To build just half a station would still be probably about $20 million so in the grand scheme of a $2.0 billion dollar project, $10 million is near negligible and just a big inconvenience if you ever extend the line. It's also why most terminus stations are center platforms - you only need one platform and you can board passengers on either side and use the other for train storage.
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For a manual system, yes, you need trains to terminate and park at either side of the platform so driver can take their break before the next departure. Passenger can go on either side of the platform depending on which train will depart first. For automated system, it doesn't really matter as train can go and reverse in the tail track by itself.
Waterfront (Expo) is center platform, but train still goes into tail track and reverse, so it works as if it's side platformed.
King George, VCC-Clark are all side platformed.
For all other terminus, single or double tracked, only one side is used most of the time as there is no need for extra layover for driver break. Building the other side or not really doesn't matter most of the time.
The key here is not to save one side of platform (since even if it's build, it probably never going to be used for a 6min headway anyways).. it's to remove the need for a separated storage facility. Instead of just 10M, that could cost 100M or more. Plus, as long as it's double tracked, it will be relatively easy to build the second platform compared to Canada Line. Instead of having a "future station", you basically have half of a future station while the other half is functional.
More trains, second platform, and a separated OMC can always be part of phase 3 as "Expo Line Capacity Upgrade".
Plus, how likely do you think they'll extend the line past Langley Centre?