Agv
A dispatcher committed a vehicle to a task.
The one thing an active fleet does that a passive one has no equivalent of, and the one thing a viewer cannot infer from watching the vehicles move. Movement, state and zone occupancy are already emitted by the body, so a recording of a passive run and an active run look the same on a canvas: carts going places. What distinguishes them is why — a decision was made, by an object, at an instant, and this is that instant.
It carries the origin and destination as well as the vehicle, because the interesting question when watching a fleet is usually not which cart moved but why that cart was sent to that pickup rather than a nearer one. A revocation shows up as a second event for the same task with a different vehicle, so re-tasking is visible without a tag of its own.