Sidewalk Sentinels

In every city there are 4 flows of traffic:

pedestrians
bicycles
motorcycles
automobiles

But there are only 2 or 3 paths for the flows:

sidewalks
bike paths
roads

How do you keep everyone safe? You have to restrict the flows to particular paths. One rule that almost everyone would agree to is that cars should stay off the sidewalks. It would seem too dangerous to have 2-3 ton vehicles competing with the delicate sacks of fluid called people.

This difficult task of restricting cars from the sidewalks falls to the army of "sidewalk sentinels".

They come is all different colors and shapes but their task is the same: Keeping the pedestrians safe.

Like all soldiers they sometimes have a mission that requires them to array in formation.

And sometimes, they need to assemble visibly in their parade dress uniforms.

But like all soldiers, some bear the wounds of confrontation with the enemy.

And some soldiers have fallen on the field of battle.