Quote:
Originally Posted by Migrant_Coconut
That "one system" is currently hampering maximum frequency east of the PW-Columbia chokepoint, not to mention increasing the amount of switch usage
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Still, TransLink doesn't believe the SkyBridge is a choke point. At least it's not nearly as constrained as Main-CMBW. At one point, they were even thinking of terminating every 4th train at Metrotown instead of sending it over to Surrey or Production.
The current plan alternate trains from Waterfront to (1/3) Langley, (1/3) 140th, and (1/3) Production/Arbutus; and from Arbutus to (1/2) Lafarge and (1/2) Waterfront. With the longer trains and slight increase in frequency, the capacity over SkyBridge will be almost the same as the pre-pandemic capacity for the segment between Metrotown to Broadway.
If they need more capacity over SkyBridge, they can easily change the pattern to (1/4) Langley, (2/4) 140th, (1/4) Production/Arbutus.. and then (1/3) Waterfront, (2/3) Lafarge on the Millennium side without much investment besides additional trains (or delayed retirement). But then you're arguing that the SkyBridge will have a demand of well over 18,000 pphpd on or before 2050, more than triple the current demand...