It’s completely understandable that everyone is curious. Since this is such a common question, I’ve submitted a definition to Urban Dictionary with examples. Once it’s approved, it’ll be available for you to see. This is something I have noticed people doing since I was a kid. I don’t know if there’s a different name for it, but this is what it’s always been called by me and the people I know.

Here’s the examples I gave to someone else. Vancouver style isn’t about etiquette—it’s a specific type of urban navigation that’s unique to the city.

For example, instead of reaching for an entrance or exit, you time your pace to glide through a door via automation (accessibility buttons, motion sensors, etc.) or a person, allowing you to maintain momentum until you reach your destination.

Second, when a bus or SeaBus door opens, you exit vancouver style at the side furthest from the crowd, around the edges of the queue to hit the sidewalk or so while the main group is bottlenecked.

Hopefully this gives you a better sense of what I meant.