Only thing I have seen is in Seattle 2072 pg 10
QUOTE
The Metro Transit Company—majority-owned by the metroplex government—runs
Seattle’s public transit system. Bus routes run throughout the metroplex, with schedules
available from the public Grid. There is no charge to ride the bus in the downtown “free
zone.” Trips outside downtown cost 2¥.
Seattle also has a monorail system, updated and expanded several times in its hundred plus-
year history. The monorail loops around the downtown district on elevated tracks, with
stops at Seattle Center, the ACHE, King Street Station, and many other places along the way.
Riding the monorail costs 1¥.
So most likely it is still under Metroplex control, which does make the most sense.