[GaryVoshol]

Far too often, yelling "ROBOT" means, "Get out of MY way!" It shows arrogance - where I want to go is of primary importance. And it all becomes a case of crying wolf - nobody pays attention anymore.

If there is a crowd of people in the pit aisle, simply ask them to let you get your robot past. There's no need to yell at them. The only time you need to shout is if someone unexpectedly moves into your path - then it is a safety issue because it probably is easier for that person to jump out of the way than it is to stop the robot from hitting him.