In two scenarios, the crowd is instructed to either run (left) or walk calmly (right) to a single, narrow exit. When navigating, the area scanned by each agent changes size and shape based on the speed and density of the crowd. When the runners encounter traffic, they focus on nearby collisions, ignoring far-off features, and individual behavior yields to crowd dynamics. The agents interpret subtle signals in their neighbors' body language and abruptly adjust to avoid smashing into people and other obstacles best avoided. The small scanning area and constant adjustments in the running scenario cause spontaneous jams that ripple backwards against the tide of crowd flow. The walkers have a greater buffer of personal space and are able to proceed at a more constant pace, allowing for a larger scanning area.