Encountered by a traveler to the Champs de Targets…
How exactly does a pedestrian comply with a stop sign? Do both feet need to be firmly planted, approximately parallel so as not to suggest movement, in order to come to a complete stop? Is a pedestrian at a stop sign required to turn his or her head in each direction, or does a nonchalant scan of the field of vision suffice?
Pedestrian activity has been compared to such graceful movement as ballet, clouds, and animal migration. Why wasn’t a simple LOOK OUT FOR THE TRAIN YOU IDIOT sign good enough? Why do we need to be subject to the same confining rules as our twitchy vehicular brethren?
Getting Around Minneapolis 
I thought they did have “Watch for Trains” signs at the stations. Is this station special because of all the “game day” ped traffic and the drinking that often goes along with it?
I think you’re right, in fact that’s why I took the picture. It may be special for that reason but I don’t see how a stop sign helps with larger crowds, I’d think the opposite.