[JABot67]

Comparison between places I've competed:

Michigan:

When I started in 2007, yelling "ROBOT" was common. Now, not so much. There is plenty of space in the aisles between the pits for drive teams to move their robots, and usually a simple "excuse us" is enough to get people out of the way.

PNW:

Navigating the pits at PNW district events can be crazy sometimes. At any point in time during a competition, there seem to be quite a few team members standing outside many teams' pits. If you are trying to queue for a match quickly, there will be plenty of people in the way. Yelling "ROBOT" is extremely common, to the point of being expected.

If I say something like "excuse me" as I'm trying to get through a crowd, the crowd's members will actually start yelling "ROBOT" for me.

I do think it's super weird.

Worlds:

There is usually ample space between the pits, and there are marked out lanes for robot traffic. Yelling "ROBOT" is unnecessary and rare.