One code per group
The Principal code stays the same and can show multiple vehicles at once.
Live tracking
Track the van on the map in real time.
Use the permanent route code to follow the van and, when more than one driver is active, see each van on the same map.
Track the vanContinuous updates
The map receives live positions and uses HTTP to rebuild state when needed.
Only what is needed
The public page does not expose technical IDs, passengers, or internal operation data.