The Burrard_Peninsula should have been planned as one city well over a century ago. Then eventually adding the Eastern Tri-Cities.
Unlike most of the region, theses 6 little cities don't have wide rivers or an inlet to hinder them.
Thus, it's more relatively easier to get around.
Greater Vancouver has been reluctant to build a few more bridges in the region. Bottleneck planning is the name of the game. Of course for most major urban areas around the world, rivers just aren't as much of a hindrance.
https://www.youtube.com/watch?v=tKHVHG2VhZc
Vancouver, Burnaby & NW are essentially the main regional Tri-Cities, but there is still another set.
North_Vancouver_(city) is sort of in-between West_Vancouver and North_Vancouver_(district_municipality). They are like the Northern Tri-Cities of the Greater Vancouver Metropolitan Regional_District.
So far, its been difficult or simply unpopular to merge all 3 sets of Tri-Cities.
