| Source Element | Destination Element | Flow |
|---|
| City of Lawrence Parking Management | Private Vehicles | vehicle payment request |
| Private Vehicles | vehicle payment update |
| Fire Medical EMS Vehicles | City of Lawrence Traffic Signals | local signal preemption request |
| KU Parking Management System | KU Parking Vehicles | vehicle payment request |
| KU Parking Vehicles | vehicle payment update |
| Private Vehicles | vehicle payment request |
| Private Vehicles | vehicle payment update |
| KU Parking Vehicles | KU Parking Management System | vehicle payment information |
| Lawrence Transit Vehicles | City of Lawrence Traffic Signals | local signal priority request |
| Private Vehicles | City of Lawrence Parking Management | vehicle payment information |
| KU Parking Management System | vehicle payment information |